diff --git a/app/components/editable_champ/carte_component.rb b/app/components/editable_champ/carte_component.rb
index 792995b35..189fcb76a 100644
--- a/app/components/editable_champ/carte_component.rb
+++ b/app/components/editable_champ/carte_component.rb
@@ -11,10 +11,6 @@ class EditableChamp::CarteComponent < EditableChamp::EditableChampBaseComponent
   end
 
   def update_path
-    if Champ.update_by_stable_id?
-      champs_carte_features_path(@champ.dossier, @champ.stable_id, row_id: @champ.row_id)
-    else
-      champs_legacy_carte_features_path(@champ)
-    end
+    champs_carte_features_path(@champ.dossier, @champ.stable_id, row_id: @champ.row_id)
   end
 end
diff --git a/app/components/editable_champ/editable_champ_component.rb b/app/components/editable_champ/editable_champ_component.rb
index 8bc6f4cac..a529d7a8f 100644
--- a/app/components/editable_champ/editable_champ_component.rb
+++ b/app/components/editable_champ/editable_champ_component.rb
@@ -54,17 +54,9 @@ class EditableChamp::EditableChampComponent < ApplicationComponent
 
   def turbo_poll_url_value
     if @champ.private?
-      if Champ.update_by_stable_id?
-        annotation_instructeur_dossier_path(@champ.dossier.procedure, @champ.dossier, @champ.stable_id, row_id: @champ.row_id, with_public_id: true)
-      else
-        annotation_instructeur_dossier_path(@champ.dossier.procedure, @champ.dossier, @champ)
-      end
+      annotation_instructeur_dossier_path(@champ.dossier.procedure, @champ.dossier, @champ.stable_id, row_id: @champ.row_id, with_public_id: true)
     else
-      if Champ.update_by_stable_id?
-        champ_dossier_path(@champ.dossier, @champ.stable_id, row_id: @champ.row_id, with_public_id: true)
-      else
-        champ_dossier_path(@champ.dossier, @champ)
-      end
+      champ_dossier_path(@champ.dossier, @champ.stable_id, row_id: @champ.row_id, with_public_id: true)
     end
   end
 
diff --git a/app/components/editable_champ/editable_champ_component/editable_champ_component.html.haml b/app/components/editable_champ/editable_champ_component/editable_champ_component.html.haml
index 9608eded7..06ff21348 100644
--- a/app/components/editable_champ/editable_champ_component/editable_champ_component.html.haml
+++ b/app/components/editable_champ/editable_champ_component/editable_champ_component.html.haml
@@ -6,8 +6,3 @@
     = render champ_component
 
     = render Dsfr::InputStatusMessageComponent.new(errors_on_attribute: champ_component.errors_on_attribute?, error_full_messages: champ_component.error_full_messages, describedby_id: @champ.describedby_id, champ: @champ)
-
-    - if Champ.update_by_stable_id?
-      = @form.hidden_field :with_public_id, value: 'true'
-    - else
-      = @form.hidden_field :id, value: @champ.id
diff --git a/app/components/editable_champ/multiple_drop_down_list_component.rb b/app/components/editable_champ/multiple_drop_down_list_component.rb
index 9ba731618..55e3d4ba4 100644
--- a/app/components/editable_champ/multiple_drop_down_list_component.rb
+++ b/app/components/editable_champ/multiple_drop_down_list_component.rb
@@ -10,10 +10,6 @@ class EditableChamp::MultipleDropDownListComponent < EditableChamp::EditableCham
   end
 
   def update_path(option)
-    if Champ.update_by_stable_id?
-      champs_options_path(@champ.dossier, @champ.stable_id, row_id: @champ.row_id, option:)
-    else
-      champs_legacy_options_path(@champ, option:)
-    end
+    champs_options_path(@champ.dossier, @champ.stable_id, row_id: @champ.row_id, option:)
   end
 end
diff --git a/app/components/editable_champ/rna_component.rb b/app/components/editable_champ/rna_component.rb
index 09783147c..fd04cb278 100644
--- a/app/components/editable_champ/rna_component.rb
+++ b/app/components/editable_champ/rna_component.rb
@@ -4,10 +4,6 @@ class EditableChamp::RNAComponent < EditableChamp::EditableChampBaseComponent
   end
 
   def update_path
-    if Champ.update_by_stable_id?
-      champs_rna_path(@champ.dossier, @champ.stable_id, row_id: @champ.row_id)
-    else
-      champs_legacy_rna_path(@champ)
-    end
+    champs_rna_path(@champ.dossier, @champ.stable_id, row_id: @champ.row_id)
   end
 end
diff --git a/app/components/editable_champ/siret_component.rb b/app/components/editable_champ/siret_component.rb
index 800d6be5d..f97fbf50a 100644
--- a/app/components/editable_champ/siret_component.rb
+++ b/app/components/editable_champ/siret_component.rb
@@ -12,10 +12,6 @@ class EditableChamp::SiretComponent < EditableChamp::EditableChampBaseComponent
   end
 
   def update_path
-    if Champ.update_by_stable_id?
-      champs_siret_path(@champ.dossier, @champ.stable_id, row_id: @champ.row_id)
-    else
-      champs_legacy_siret_path(@champ)
-    end
+    champs_siret_path(@champ.dossier, @champ.stable_id, row_id: @champ.row_id)
   end
 end
diff --git a/app/controllers/champs/champ_controller.rb b/app/controllers/champs/champ_controller.rb
index 5c03ee863..73ecb3044 100644
--- a/app/controllers/champs/champ_controller.rb
+++ b/app/controllers/champs/champ_controller.rb
@@ -5,15 +5,9 @@ class Champs::ChampController < ApplicationController
   private
 
   def find_champ
-    if params[:champ_id].present?
-      policy_scope(Champ)
-        .includes(:type_de_champ, dossier: :champs)
-        .find(params[:champ_id])
-    else
-      dossier = policy_scope(Dossier).includes(:champs, revision: [:types_de_champ]).find(params[:dossier_id])
-      type_de_champ = dossier.find_type_de_champ_by_stable_id(params[:stable_id])
-      dossier.champ_for_update(type_de_champ, params_row_id)
-    end
+    dossier = policy_scope(Dossier).includes(:champs, revision: [:types_de_champ]).find(params[:dossier_id])
+    type_de_champ = dossier.find_type_de_champ_by_stable_id(params[:stable_id])
+    dossier.champ_for_update(type_de_champ, params_row_id)
   end
 
   def params_row_id
diff --git a/app/controllers/champs/options_controller.rb b/app/controllers/champs/options_controller.rb
index cc878fc3e..61e53e05c 100644
--- a/app/controllers/champs/options_controller.rb
+++ b/app/controllers/champs/options_controller.rb
@@ -3,9 +3,8 @@ class Champs::OptionsController < Champs::ChampController
 
   def remove
     @champ.remove_option([params[:option]].compact, true)
-    @champ.reload
     @dossier = @champ.private? ? nil : @champ.dossier
-    champs_attributes = { @champ.public_id => params[:champ_id].present? ? { id: @champ.id } : { with_public_id: true } }
+    champs_attributes = { @champ.public_id => {} }
     @to_show, @to_hide, @to_update = champs_to_turbo_update(champs_attributes, @champ.dossier.champs)
   end
 end
diff --git a/app/controllers/concerns/turbo_champs_concern.rb b/app/controllers/concerns/turbo_champs_concern.rb
index 34e683e97..089edacbc 100644
--- a/app/controllers/concerns/turbo_champs_concern.rb
+++ b/app/controllers/concerns/turbo_champs_concern.rb
@@ -4,13 +4,8 @@ module TurboChampsConcern
   private
 
   def champs_to_turbo_update(params, champs)
-    to_update = if params.values.filter { _1.key?(:with_public_id) }.empty?
-                  champ_ids = params.values.map { _1[:id] }.compact.map(&:to_i)
-                  champs.filter { _1.id.in?(champ_ids) }
-                else
-                  champ_public_ids = params.keys
-                  champs.filter { _1.public_id.in?(champ_public_ids) }
-                end.filter { _1.refresh_after_update? || _1.forked_with_changes? }
+    to_update = champs.filter { _1.public_id.in?(params.keys) }
+      .filter { _1.refresh_after_update? || _1.forked_with_changes? }
 
     to_show, to_hide = champs.filter(&:conditional?)
       .partition(&:visible?)
diff --git a/app/controllers/instructeurs/dossiers_controller.rb b/app/controllers/instructeurs/dossiers_controller.rb
index 7ab9a717d..7657f9a48 100644
--- a/app/controllers/instructeurs/dossiers_controller.rb
+++ b/app/controllers/instructeurs/dossiers_controller.rb
@@ -275,7 +275,7 @@ module Instructeurs
 
     def update_annotations
       dossier_with_champs.update_champs_attributes(champs_private_attributes_params, :private)
-      if dossier.champs.any?(&:changed_for_autosave?) || dossier.champs_private_all.any?(&:changed_for_autosave?) # TODO remove second condition after one deploy
+      if dossier.champs.any?(&:changed_for_autosave?)
         dossier.last_champ_private_updated_at = Time.zone.now
       end
 
@@ -296,13 +296,8 @@ module Instructeurs
 
     def annotation
       @dossier = dossier_with_champs(pj_template: false)
-      annotation_id_or_stable_id = params[:stable_id]
-      annotation = if params[:with_public_id].present?
-        type_de_champ = @dossier.find_type_de_champ_by_stable_id(annotation_id_or_stable_id, :private)
-        @dossier.project_champ(type_de_champ, params[:row_id])
-      else
-        @dossier.champs_private_all.find(annotation_id_or_stable_id)
-      end
+      type_de_champ = @dossier.find_type_de_champ_by_stable_id(params[:stable_id], :private)
+      annotation = @dossier.project_champ(type_de_champ, params[:row_id])
 
       respond_to do |format|
         format.turbo_stream do
@@ -418,7 +413,6 @@ module Instructeurs
         :accreditation_number,
         :accreditation_birthdate,
         :feature,
-        :with_public_id,
         value: []
       ]
       # Strong attributes do not support records (indexed hash); they only support hashes with
diff --git a/app/controllers/users/dossiers_controller.rb b/app/controllers/users/dossiers_controller.rb
index db49503c7..e6a64f2cd 100644
--- a/app/controllers/users/dossiers_controller.rb
+++ b/app/controllers/users/dossiers_controller.rb
@@ -319,13 +319,8 @@ module Users
 
     def champ
       @dossier = dossier_with_champs(pj_template: false)
-      champ_id_or_stable_id = params[:stable_id]
-      champ = if params[:with_public_id].present?
-        type_de_champ = @dossier.find_type_de_champ_by_stable_id(champ_id_or_stable_id, :public)
-        @dossier.project_champ(type_de_champ, params[:row_id])
-      else
-        @dossier.champs_public_all.find(champ_id_or_stable_id)
-      end
+      type_de_champ = @dossier.find_type_de_champ_by_stable_id(params[:stable_id], :public)
+      champ = @dossier.project_champ(type_de_champ, params[:row_id])
 
       respond_to do |format|
         format.turbo_stream do
@@ -511,7 +506,6 @@ module Users
         :accreditation_number,
         :accreditation_birthdate,
         :feature,
-        :with_public_id,
         value: []
       ]
       # Strong attributes do not support records (indexed hash); they only support hashes with
@@ -556,7 +550,7 @@ module Users
 
     def update_dossier_and_compute_errors
       @dossier.update_champs_attributes(champs_public_attributes_params, :public)
-      if @dossier.champs.any?(&:changed_for_autosave?) || @dossier.champs_public_all.any?(&:changed_for_autosave?) # TODO remove second condition after one deploy
+      if @dossier.champs.any?(&:changed_for_autosave?)
         @dossier.last_champ_updated_at = Time.zone.now
       end
 
diff --git a/app/helpers/champ_helper.rb b/app/helpers/champ_helper.rb
index a79aada8d..ed359520e 100644
--- a/app/helpers/champ_helper.rb
+++ b/app/helpers/champ_helper.rb
@@ -9,11 +9,7 @@ module ChampHelper
 
   def auto_attach_url(object, params = {})
     if object.is_a?(Champ)
-      if Champ.update_by_stable_id?
-        champs_piece_justificative_url(object.dossier, object.stable_id, params.merge(row_id: object.row_id))
-      else
-        champs_legacy_piece_justificative_url(object.id, params)
-      end
+      champs_piece_justificative_url(object.dossier, object.stable_id, params.merge(row_id: object.row_id))
     elsif object.is_a?(TypeDeChamp) && object.piece_justificative?
       piece_justificative_template_admin_procedure_type_de_champ_url(stable_id: object.stable_id, procedure_id: object.procedure.id, **params)
     elsif object.is_a?(TypeDeChamp) && object.explication?
diff --git a/app/models/champ.rb b/app/models/champ.rb
index 74b5fd1e9..6a05baea3 100644
--- a/app/models/champ.rb
+++ b/app/models/champ.rb
@@ -2,9 +2,6 @@ class Champ < ApplicationRecord
   include ChampConditionalConcern
   include ChampsValidateConcern
 
-  # TODO: remove after one deploy
-  attr_writer :with_public_id
-
   belongs_to :dossier, inverse_of: false, touch: true, optional: false
   belongs_to :type_de_champ, inverse_of: :champ, optional: false
   belongs_to :parent, class_name: 'Champ', optional: true
@@ -295,10 +292,6 @@ class Champ < ApplicationRecord
     self.value = value.delete("\u0000")
   end
 
-  def self.update_by_stable_id?
-    Flipper.enabled?(:champ_update_by_stable_id, Current.user)
-  end
-
   class NotImplemented < ::StandardError
     def initialize(method)
       super(":#{method} not implemented")
diff --git a/app/models/concerns/dossier_champs_concern.rb b/app/models/concerns/dossier_champs_concern.rb
index 1e5f2bc3e..40c0692c8 100644
--- a/app/models/concerns/dossier_champs_concern.rb
+++ b/app/models/concerns/dossier_champs_concern.rb
@@ -65,13 +65,6 @@ module DossierChampsConcern
   end
 
   def update_champs_attributes(attributes, scope)
-    # TODO: remove after one deploy
-    if attributes.present? && attributes.values.filter { _1.key?(:with_public_id) }.empty?
-      assign_attributes("champs_#{scope}_all_attributes".to_sym => attributes)
-      @champs_by_public_id = nil
-      return
-    end
-
     champs_attributes = attributes.to_h.map do |public_id, attributes|
       champ_attributes_by_public_id(public_id, attributes, scope)
     end
diff --git a/app/models/dossier.rb b/app/models/dossier.rb
index 5d3c1a810..6fa255a64 100644
--- a/app/models/dossier.rb
+++ b/app/models/dossier.rb
@@ -49,8 +49,6 @@ class Dossier < ApplicationRecord
   has_many :champs_to_destroy, -> { order(:parent_id) }, class_name: 'Champ', inverse_of: false, dependent: :destroy
   has_many :champs_public, -> { root.public_only }, class_name: 'Champ', inverse_of: false
   has_many :champs_private, -> { root.private_only }, class_name: 'Champ', inverse_of: false
-  has_many :champs_public_all, -> { public_only }, class_name: 'Champ', inverse_of: false
-  has_many :champs_private_all, -> { private_only }, class_name: 'Champ', inverse_of: false
   has_many :prefilled_champs_public, -> { root.public_only.prefilled }, class_name: 'Champ', inverse_of: false
 
   has_many :commentaires, inverse_of: :dossier, dependent: :destroy
@@ -145,8 +143,6 @@ class Dossier < ApplicationRecord
   accepts_nested_attributes_for :champs
   accepts_nested_attributes_for :champs_public
   accepts_nested_attributes_for :champs_private
-  accepts_nested_attributes_for :champs_public_all
-  accepts_nested_attributes_for :champs_private_all
   accepts_nested_attributes_for :individual
 
   include AASM
diff --git a/app/models/dossier_preloader.rb b/app/models/dossier_preloader.rb
index c1a3e614e..fd19a3ab1 100644
--- a/app/models/dossier_preloader.rb
+++ b/app/models/dossier_preloader.rb
@@ -93,8 +93,6 @@ class DossierPreloader
     champs_public, champs_private = champs.partition(&:public?)
 
     dossier.association(:champs).target = []
-    dossier.association(:champs_public_all).target = []
-    dossier.association(:champs_private_all).target = []
     load_champs(dossier, :champs_public, champs_public, dossier, children_by_parent)
     load_champs(dossier, :champs_private, champs_private, dossier, children_by_parent)
 
@@ -122,12 +120,6 @@ class DossierPreloader
 
     dossier.association(:champs).target += champs
 
-    if champs.first.public?
-      dossier.association(:champs_public_all).target += champs
-    else
-      dossier.association(:champs_private_all).target += champs
-    end
-
     parent.association(name).target = champs
       .filter { positions[dossier.revision_id][_1.type_de_champ_id].present? }
       .sort_by { [_1.row_id, positions[dossier.revision_id][_1.type_de_champ_id]] }
diff --git a/config/initializers/flipper.rb b/config/initializers/flipper.rb
index 765a98bfe..a027582b2 100644
--- a/config/initializers/flipper.rb
+++ b/config/initializers/flipper.rb
@@ -31,8 +31,7 @@ features = [
   :groupe_instructeur_api_hack,
   :hide_instructeur_email,
   :sva,
-  :switch_domain,
-  :champ_update_by_stable_id
+  :switch_domain
 ]
 
 def database_exists?
diff --git a/config/routes.rb b/config/routes.rb
index 3905bb24f..dbe1d200a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -208,20 +208,6 @@ Rails.application.routes.draw do
     get ':dossier_id/:stable_id/piece_justificative', to: 'piece_justificative#show', as: :piece_justificative
     put ':dossier_id/:stable_id/piece_justificative', to: 'piece_justificative#update'
     get ':dossier_id/:stable_id/piece_justificative/template', to: 'piece_justificative#template', as: :piece_justificative_template
-
-    # TODO: remove after migration is ower
-    get ':champ_id/siret', to: 'siret#show', as: :legacy_siret
-    get ':champ_id/rna', to: 'rna#show', as: :legacy_rna
-    delete ':champ_id/options', to: 'options#remove', as: :legacy_options
-
-    get ':champ_id/carte/features', to: 'carte#index', as: :legacy_carte_features
-    post ':champ_id/carte/features', to: 'carte#create'
-    patch ':champ_id/carte/features/:id', to: 'carte#update'
-    delete ':champ_id/carte/features/:id', to: 'carte#destroy'
-
-    get ':champ_id/piece_justificative', to: 'piece_justificative#show', as: :legacy_piece_justificative
-    put ':champ_id/piece_justificative', to: 'piece_justificative#update'
-    get ':champ_id/piece_justificative/template', to: 'piece_justificative#template'
   end
 
   resources :attachments, only: [:show, :destroy]
diff --git a/spec/controllers/champs/carte_controller_spec.rb b/spec/controllers/champs/carte_controller_spec.rb
index 0e0d86657..80d566593 100644
--- a/spec/controllers/champs/carte_controller_spec.rb
+++ b/spec/controllers/champs/carte_controller_spec.rb
@@ -1,30 +1,28 @@
 describe Champs::CarteController, type: :controller do
   let(:user) { create(:user) }
-  let(:procedure) { create(:procedure, :published) }
+  let(:procedure) { create(:procedure, :published, types_de_champ_public: [{ type: :carte, options: { cadastres: true } }]) }
   let(:dossier) { create(:dossier, user: user, procedure: procedure) }
   let(:params) do
     {
       dossier: {
         champs_public_attributes: {
-          '1' => { value: value }
+          champ.public_id => { value: value }
         }
       },
       position: '1',
-      champ_id: champ.id
+      dossier_id: champ.dossier_id,
+      stable_id: champ.stable_id
     }
   end
-  let(:champ) do
-    create(:type_de_champ_carte, options: {
-      cadastres: true
-    }).champ.create(dossier: dossier)
-  end
+  let(:champ) { dossier.champs.first }
 
   describe 'features' do
     let(:feature) { attributes_for(:geo_area, :polygon) }
     let(:geo_area) { create(:geo_area, :selection_utilisateur, :polygon, champ: champ) }
     let(:params) do
       {
-        champ_id: champ.id,
+        dossier_id: champ.dossier_id,
+        stable_id: champ.stable_id,
         feature: feature,
         source: GeoArea.sources.fetch(:selection_utilisateur)
       }
@@ -49,7 +47,8 @@ describe Champs::CarteController, type: :controller do
         let(:feature) { attributes_for(:geo_area, :invalid_point) }
         let(:params) do
           {
-            champ_id: champ.id,
+            dossier_id: champ.dossier_id,
+            stable_id: champ.stable_id,
             feature: feature,
             source: GeoArea.sources.fetch(:selection_utilisateur)
           }
@@ -62,7 +61,8 @@ describe Champs::CarteController, type: :controller do
     describe 'PATCH #update' do
       let(:params) do
         {
-          champ_id: champ.id,
+          dossier_id: champ.dossier_id,
+          stable_id: champ.stable_id,
           id: geo_area.id,
           feature: feature
         }
@@ -101,7 +101,8 @@ describe Champs::CarteController, type: :controller do
     describe 'DELETE #destroy' do
       let(:params) do
         {
-          champ_id: champ.id,
+          dossier_id: champ.dossier_id,
+          stable_id: champ.stable_id,
           id: geo_area.id
         }
       end
@@ -122,7 +123,10 @@ describe Champs::CarteController, type: :controller do
 
       context 'without focus' do
         let(:params) do
-          { champ_id: champ.id }
+          {
+            dossier_id: champ.dossier_id,
+            stable_id: champ.stable_id
+          }
         end
 
         it 'updates the list' do
@@ -134,7 +138,8 @@ describe Champs::CarteController, type: :controller do
       context "update list and focus" do
         let(:params) do
           {
-            champ_id: champ.id,
+            dossier_id: champ.dossier_id,
+            stable_id: champ.stable_id,
             focus: true
           }
         end
diff --git a/spec/controllers/champs/options_controller_spec.rb b/spec/controllers/champs/options_controller_spec.rb
index 3b2e2466f..ca24b6805 100644
--- a/spec/controllers/champs/options_controller_spec.rb
+++ b/spec/controllers/champs/options_controller_spec.rb
@@ -18,13 +18,5 @@ describe Champs::OptionsController, type: :controller do
         expect { subject }.to change { champ.reload.selected_options.size }.from(2).to(1)
       end
     end
-
-    context 'with champ_id' do
-      subject { delete :remove, params: { champ_id: champ.id, option: 'tata' }, format: :turbo_stream }
-
-      it 'remove option' do
-        expect { subject }.to change { champ.reload.selected_options.size }.from(2).to(1)
-      end
-    end
   end
 end
diff --git a/spec/controllers/champs/rna_controller_spec.rb b/spec/controllers/champs/rna_controller_spec.rb
index a9275e843..449c34c68 100644
--- a/spec/controllers/champs/rna_controller_spec.rb
+++ b/spec/controllers/champs/rna_controller_spec.rb
@@ -121,7 +121,7 @@ describe Champs::RNAController, type: :controller do
     end
 
     context 'when user is not signed in' do
-      subject! { get :show, params: { champ_id: champ.id }, format: :turbo_stream }
+      subject! { get :show, params: { dossier_id: champ.dossier_id, stable_id: champ.stable_id }, format: :turbo_stream }
 
       it { expect(response.code).to redirect_to(new_user_session_path) }
     end
diff --git a/spec/controllers/champs/siret_controller_spec.rb b/spec/controllers/champs/siret_controller_spec.rb
index 4e5212e36..28b652ed1 100644
--- a/spec/controllers/champs/siret_controller_spec.rb
+++ b/spec/controllers/champs/siret_controller_spec.rb
@@ -151,7 +151,7 @@ describe Champs::SiretController, type: :controller do
     end
 
     context 'when user is not signed in' do
-      subject! { get :show, params: { champ_id: champ.id }, format: :turbo_stream }
+      subject! { get :show, params: { dossier_id: champ.dossier_id, stable_id: champ.stable_id }, format: :turbo_stream }
 
       it { expect(response).to redirect_to(new_user_session_path) }
     end
diff --git a/spec/controllers/instructeurs/dossiers_controller_spec.rb b/spec/controllers/instructeurs/dossiers_controller_spec.rb
index 8add60a04..3ee08fbf8 100644
--- a/spec/controllers/instructeurs/dossiers_controller_spec.rb
+++ b/spec/controllers/instructeurs/dossiers_controller_spec.rb
@@ -1006,24 +1006,19 @@ describe Instructeurs::DossiersController, type: :controller do
             dossier: {
               champs_private_attributes: {
                 champ_multiple_drop_down_list.public_id => {
-                  with_public_id: true,
                   value: ['', 'val1', 'val2']
                 },
                 champ_datetime.public_id => {
-                  with_public_id: true,
                   value: '2019-12-21T13:17'
                 },
                 champ_linked_drop_down_list.public_id => {
-                  with_public_id: true,
                   primary_value: 'primary',
                   secondary_value: 'secondary'
                 },
                 champ_repetition.champs.first.public_id => {
-                  with_public_id: true,
                   value: 'text'
                 },
                 champ_drop_down_list.public_id => {
-                  with_public_id: true,
                   value: '__other__',
                   value_other: 'other value'
                 }
@@ -1079,29 +1074,6 @@ describe Instructeurs::DossiersController, type: :controller do
       Timecop.return
     end
 
-    context "with new values for champs_private (legacy)" do
-      let(:params) do
-        {
-          procedure_id: procedure.id,
-          dossier_id: dossier.id,
-          dossier: {
-            champs_private_attributes: {
-              '0': {
-                id: champ_datetime.id,
-                value: '2024-03-30T07:03'
-              }
-            }
-          }
-        }
-      end
-
-      it 'update champs_private' do
-        patch :update_annotations, params: params, format: :turbo_stream
-        champ_datetime.reload
-        expect(champ_datetime.value).to eq(Time.zone.parse('2024-03-30T07:03:00').iso8601)
-      end
-    end
-
     context "without new values for champs_private" do
       let(:params) do
         {
@@ -1111,7 +1083,6 @@ describe Instructeurs::DossiersController, type: :controller do
             champs_private_attributes: {},
             champs_public_attributes: {
               champ_multiple_drop_down_list.public_id => {
-                with_public_id: true,
                 value: ['', 'val1', 'val2']
               }
             }
@@ -1141,7 +1112,6 @@ describe Instructeurs::DossiersController, type: :controller do
           dossier: {
             champs_private_attributes: {
               champ_datetime.public_id => {
-                with_public_id: true,
                 value: '2024-03-30T07:03'
               }
             }
diff --git a/spec/controllers/users/dossiers_controller_spec.rb b/spec/controllers/users/dossiers_controller_spec.rb
index fb1a28e53..8dd165c01 100644
--- a/spec/controllers/users/dossiers_controller_spec.rb
+++ b/spec/controllers/users/dossiers_controller_spec.rb
@@ -675,11 +675,9 @@ describe Users::DossiersController, type: :controller do
           groupe_instructeur_id: dossier.groupe_instructeur_id,
           champs_public_attributes: {
             first_champ.public_id => {
-              with_public_id: true,
               value: value
             },
             piece_justificative_champ.public_id => {
-              with_public_id: true,
               piece_justificative_file: file
             }
           }
@@ -713,22 +711,6 @@ describe Users::DossiersController, type: :controller do
         expect(dossier.reload.updated_at.year).to eq(2100)
         expect(dossier.reload.state).to eq(Dossier.states.fetch(:brouillon))
       end
-
-      context 'without new values for champs' do
-        let(:submit_payload) do
-          {
-            id: dossier.id,
-            dossier: {
-              champs_public_attributes: { first_champ.public_id => { with_public_id: true } }
-            }
-          }
-        end
-
-        it "doesn't set last_champ_updated_at" do
-          subject
-          expect(dossier.reload.last_champ_updated_at).to eq(nil)
-        end
-      end
     end
 
     context 'when the user has an invitation but is not the owner' do
@@ -747,7 +729,7 @@ describe Users::DossiersController, type: :controller do
         {
           id: dossier.id,
           dossier: {
-            champs_public_attributes: { first_champ.public_id => { with_public_id: true, value: value } }
+            champs_public_attributes: { first_champ.public_id => { value: value } }
           }
         }
       end
@@ -801,11 +783,9 @@ describe Users::DossiersController, type: :controller do
           groupe_instructeur_id: dossier.groupe_instructeur_id,
           champs_public_attributes: {
             first_champ.public_id => {
-              with_public_id: true,
               value: value
             },
             piece_justificative_champ.public_id => {
-              with_public_id: true,
               piece_justificative_file: file
             }
           }
@@ -866,7 +846,6 @@ describe Users::DossiersController, type: :controller do
             dossier: {
               champs_public_attributes: {
                 piece_justificative_champ.public_id => {
-                  with_public_id: true,
                   piece_justificative_file: file
                 }
               }
@@ -962,7 +941,6 @@ describe Users::DossiersController, type: :controller do
           dossier: {
             champs_public_attributes: {
               first_champ.public_id => {
-                with_public_id: true,
                 value: value
               }
             }
diff --git a/spec/models/concerns/dossier_champs_concern_spec.rb b/spec/models/concerns/dossier_champs_concern_spec.rb
index f0d2a0357..a9e58ca77 100644
--- a/spec/models/concerns/dossier_champs_concern_spec.rb
+++ b/spec/models/concerns/dossier_champs_concern_spec.rb
@@ -181,9 +181,9 @@ RSpec.describe DossierChampsConcern do
 
     let(:attributes) do
       {
-        "99" => { value: "Hello", with_public_id: true },
-        "991" => { value: "World", with_public_id: true },
-        "994-#{row_id}" => { value: "Greer", with_public_id: true }
+        "99" => { value: "Hello" },
+        "991" => { value: "World" },
+        "994-#{row_id}" => { value: "Greer" }
       }
     end
 
@@ -218,36 +218,12 @@ RSpec.describe DossierChampsConcern do
         expect(champ_994.value).to eq("Greer")
       }
     end
-
-    context 'legacy attributes' do
-      let(:attributes) do
-        {
-          champ_99.id => { value: "Hello", id: champ_99.id },
-          champ_991.id => { value: "World", id: champ_991.id },
-          champ_994.id => { value: "Greer", id: champ_994.id }
-        }
-      end
-
-      let(:champ_99_updated) { dossier.project_champ(dossier.find_type_de_champ_by_stable_id(99), nil) }
-      let(:champ_991_updated) { dossier.project_champ(dossier.find_type_de_champ_by_stable_id(991), nil) }
-      let(:champ_994_updated) { dossier.project_champ(dossier.find_type_de_champ_by_stable_id(994), row_id) }
-
-      it {
-        subject
-        expect(dossier.champs_public_all.any?(&:changed_for_autosave?)).to be_truthy
-        dossier.save
-        dossier.reload
-        expect(champ_99_updated.value).to eq("Hello")
-        expect(champ_991_updated.value).to eq("World")
-        expect(champ_994_updated.value).to eq("Greer")
-      }
-    end
   end
 
   describe "#update_champs_attributes(private)" do
     let(:attributes) do
       {
-        "995" => { value: "Hello", with_public_id: true }
+        "995" => { value: "Hello" }
       }
     end
 
@@ -272,23 +248,5 @@ RSpec.describe DossierChampsConcern do
         expect(annotation_995.value).to eq("Hello")
       }
     end
-
-    context 'legacy attributes' do
-      let(:attributes) do
-        {
-          annotation_995.id => { value: "Hello", id: annotation_995.id }
-        }
-      end
-
-      let(:annotation_995_updated) { dossier.project_champ(dossier.find_type_de_champ_by_stable_id(995), nil) }
-
-      it {
-        subject
-        expect(dossier.champs_private_all.any?(&:changed_for_autosave?)).to be_truthy
-        dossier.save
-        dossier.reload
-        expect(annotation_995_updated.value).to eq("Hello")
-      }
-    end
   end
 end
diff --git a/spec/models/concerns/dossier_rebase_concern_spec.rb b/spec/models/concerns/dossier_rebase_concern_spec.rb
index 18ae80782..357329898 100644
--- a/spec/models/concerns/dossier_rebase_concern_spec.rb
+++ b/spec/models/concerns/dossier_rebase_concern_spec.rb
@@ -347,7 +347,7 @@ describe DossierRebaseConcern do
       it "updates the brouillon champs with the latest revision changes" do
         expect(dossier.revision).to eq(procedure.published_revision)
         expect(dossier.champs_public.size).to eq(5)
-        expect(dossier.champs_public_all.size).to eq(7)
+        expect(dossier.champs.count(&:public?)).to eq(7)
         expect(repetition_champ.rows.size).to eq(2)
         expect(repetition_champ.rows[0].size).to eq(1)
         expect(repetition_champ.rows[1].size).to eq(1)
@@ -360,7 +360,7 @@ describe DossierRebaseConcern do
         expect(procedure.revisions.size).to eq(3)
         expect(dossier.revision).to eq(procedure.published_revision)
         expect(dossier.champs_public.size).to eq(6)
-        expect(dossier.champs_public_all.size).to eq(12)
+        expect(dossier.champs.count(&:public?)).to eq(12)
         expect(rebased_text_champ.value).to eq(text_champ.value)
         expect(rebased_text_champ.type_de_champ_id).not_to eq(text_champ.type_de_champ_id)
         expect(rebased_datetime_champ.type_champ).to eq(TypeDeChamp.type_champs.fetch(:date))
diff --git a/spec/models/dossier_preloader_spec.rb b/spec/models/dossier_preloader_spec.rb
index b2b180451..8d6a8e575 100644
--- a/spec/models/dossier_preloader_spec.rb
+++ b/spec/models/dossier_preloader_spec.rb
@@ -29,13 +29,13 @@ describe DossierPreloader do
         expect(first_child.type).to eq('Champs::TextChamp')
         expect(repetition.id).not_to eq(first_child.id)
         expect(subject.champs.first.dossier).to eq(subject)
-        expect(subject.champs_public_all.first.dossier).to eq(subject)
+        expect(subject.champs.find(&:public?).dossier).to eq(subject)
         expect(subject.champs_public.first.dossier).to eq(subject)
 
         expect(subject.champs_public.first.type_de_champ.piece_justificative_template.attached?).to eq(false)
 
         expect(subject.champs.first.conditional?).to eq(false)
-        expect(subject.champs_public_all.first.conditional?).to eq(false)
+        expect(subject.champs.find(&:public?).conditional?).to eq(false)
         expect(subject.champs_public.first.conditional?).to eq(false)
 
         expect(first_child.parent).to eq(repetition)