diff --git a/app/assets/stylesheets/new_design/dossier_show.scss b/app/assets/stylesheets/new_design/dossier_show.scss
index 971c7cc70..e26367a75 100644
--- a/app/assets/stylesheets/new_design/dossier_show.scss
+++ b/app/assets/stylesheets/new_design/dossier_show.scss
@@ -38,10 +38,6 @@
     }
   }
 
-  .button.edit-form {
-    float: right;
-  }
-
   .messagerie-explanation {
     margin-bottom: $default-padding * 2;
   }
diff --git a/app/controllers/admin/procedures_controller.rb b/app/controllers/admin/procedures_controller.rb
index 448df9f3c..ff3024464 100644
--- a/app/controllers/admin/procedures_controller.rb
+++ b/app/controllers/admin/procedures_controller.rb
@@ -107,17 +107,20 @@ class Admin::ProceduresController < AdminController
 
   def publish
     path = params[:path]
+    lien_site_web = params[:lien_site_web]
     procedure = current_administrateur.procedures.find(params[:procedure_id])
 
     procedure.path = path
+    procedure.lien_site_web = lien_site_web
+
     if !procedure.validate
-      flash.alert = 'Lien de la démarche invalide'
+      flash.alert = 'Lien de la démarche invalide ou lien vers la démarche manquant'
       return redirect_to admin_procedures_path
     else
       procedure.path = nil
     end
 
-    if procedure.publish_or_reopen!(current_administrateur, path)
+    if procedure.publish_or_reopen!(current_administrateur, path, lien_site_web)
       flash.notice = "Démarche publiée"
       redirect_to admin_procedures_path
     else
diff --git a/app/models/procedure.rb b/app/models/procedure.rb
index 4f36161dd..cefa39bc0 100644
--- a/app/models/procedure.rb
+++ b/app/models/procedure.rb
@@ -107,12 +107,12 @@ class Procedure < ApplicationRecord
     end
   end
 
-  def publish_or_reopen!(administrateur, path)
-    if archivee? && may_reopen?(administrateur, path)
-      reopen!(administrateur, path)
-    elsif may_publish?(administrateur, path)
+  def publish_or_reopen!(administrateur, path, lien_site_web)
+    if archivee? && may_reopen?(administrateur, path, lien_site_web)
+      reopen!(administrateur, path, lien_site_web)
+    elsif may_publish?(administrateur, path, lien_site_web)
       reset!
-      publish!(administrateur, path)
+      publish!(administrateur, path, lien_site_web)
     end
   end
 
@@ -216,7 +216,7 @@ class Procedure < ApplicationRecord
         types_de_champ: [:drop_down_list, types_de_champ: :drop_down_list],
         types_de_champ_private: [:drop_down_list, types_de_champ: :drop_down_list]
       }, &method(:clone_attachments))
-    procedure.path = nil
+    procedure.path = SecureRandom.uuid
     procedure.aasm_state = :brouillon
     procedure.test_started_at = nil
     procedure.archived_at = nil
@@ -488,33 +488,29 @@ class Procedure < ApplicationRecord
     update!(path: path)
   end
 
-  def can_publish?(administrateur, path)
-    path_availability(administrateur, path).in?(PATH_CAN_PUBLISH)
+  def can_publish?(administrateur, path, lien_site_web)
+    path_availability(administrateur, path).in?(PATH_CAN_PUBLISH) && lien_site_web.present?
   end
 
-  def can_reopen?(administrateur, path)
-    path_availability(administrateur, path).in?(PATH_CAN_PUBLISH)
-  end
-
-  def after_publish(administrateur, path)
+  def after_publish(administrateur, path, lien_site_web)
     update!(published_at: Time.zone.now)
 
     claim_path_ownership!(path)
   end
 
-  def after_reopen(administrateur, path)
+  def after_reopen(administrateur, path, lien_site_web)
     update!(published_at: Time.zone.now, archived_at: nil)
 
     claim_path_ownership!(path)
   end
 
   def after_archive
-    update!(archived_at: Time.zone.now, path: nil)
+    update!(archived_at: Time.zone.now, path: SecureRandom.uuid)
   end
 
   def after_hide
     now = Time.zone.now
-    update!(hidden_at: now, path: nil)
+    update!(hidden_at: now, path: SecureRandom.uuid)
     dossiers.update_all(hidden_at: now)
   end
 
diff --git a/app/views/admin/procedures/_informations.html.haml b/app/views/admin/procedures/_informations.html.haml
index 7c1b8ad31..2ff2e84b2 100644
--- a/app/views/admin/procedures/_informations.html.haml
+++ b/app/views/admin/procedures/_informations.html.haml
@@ -19,9 +19,10 @@
     = f.label :duree_conservation_dossiers_hors_ds, "Hors demarches-simplifiees.fr* (durée en mois après la fin de l'instruction)"
     = f.number_field :duree_conservation_dossiers_hors_ds, class: 'form-control', placeholder: '6', required: true
 
-.form-group
-  %h4 Où les usagers trouveront-ils le lien vers la démarche ?
-  = f.text_field :lien_site_web, class: 'form-control', placeholder: 'https://exemple.gouv.fr/ma_demarche'
+- if @procedure.created_at.present?
+  .form-group
+    %h4 Où les usagers trouveront-ils le lien vers la démarche ?
+    = f.text_field :lien_site_web, class: 'form-control', placeholder: 'https://exemple.gouv.fr/ma_demarche'
 
 .form-group
   %h4 Cadre juridique *
diff --git a/app/views/admin/procedures/_modal_publish.html.haml b/app/views/admin/procedures/_modal_publish.html.haml
index 202f1f6bd..102e0c234 100644
--- a/app/views/admin/procedures/_modal_publish.html.haml
+++ b/app/views/admin/procedures/_modal_publish.html.haml
@@ -38,6 +38,14 @@
                 "https://vimeo.com/334463514",
                 target: "_blank"
 
+          .form-group
+            %h4 Où les usagers trouveront-ils le lien vers cette démarche ? *
+            %p.center
+              = text_field_tag(:lien_site_web, @procedure.lien_site_web,
+                                required: true,
+                                class: 'form-control',
+                                placeholder: 'https://exemple.gouv.fr/ma_demarche')
+
             #path-messages
               #path_is_mine.text-warning.center.message
                 Ce lien est déjà utilisé par une de vos démarche.
diff --git a/app/views/invites/_dropdown.html.haml b/app/views/invites/_dropdown.html.haml
index 869804b53..368c359ef 100644
--- a/app/views/invites/_dropdown.html.haml
+++ b/app/views/invites/_dropdown.html.haml
@@ -1,4 +1,4 @@
-%span.dropdown.invite-user-action{ :style => "float:right;right: 10px;" }
+%span.dropdown.invite-user-action
   %button.button.dropdown-button
     %span.icon.person
     - if dossier.invites.count > 0
diff --git a/app/views/shared/dossiers/_edit.html.haml b/app/views/shared/dossiers/_edit.html.haml
index ed34765e0..3a03f3abd 100644
--- a/app/views/shared/dossiers/_edit.html.haml
+++ b/app/views/shared/dossiers/_edit.html.haml
@@ -15,8 +15,9 @@
         Les champs avec un astérisque (
         %span.mandatory> *
         ) sont obligatoires.
-      %p.mandatory-explanation
-        Pour enregistrer votre dossier et le reprendre plus tard, cliquez sur le bouton « Enregistrer le brouillon » en bas à gauche du formulaire.
+      - if dossier.brouillon?
+        %p.mandatory-explanation
+          Pour enregistrer votre dossier et le reprendre plus tard, cliquez sur le bouton « Enregistrer le brouillon » en bas à gauche du formulaire.
 
       - if notice_url(dossier.procedure).present?
         = link_to notice_url(dossier.procedure), target: '_blank', rel: 'noopener', class: 'button notice', title: "Pour vous aider à remplir votre dossier, vous pouvez consulter le guide de cette démarche." do
diff --git a/app/views/users/dossiers/show/_header.html.haml b/app/views/users/dossiers/show/_header.html.haml
index 8753abecb..51d6a2797 100644
--- a/app/views/users/dossiers/show/_header.html.haml
+++ b/app/views/users/dossiers/show/_header.html.haml
@@ -11,9 +11,10 @@
           = "- Déposé le #{l(dossier.en_construction_at, format: '%d %B %Y')}"
 
     - if current_user.owns?(dossier)
-      = link_to "Modifier mon dossier", modifier_dossier_path(dossier.id), class: 'button accepted edit-form', 'title'=> "Vous pouvez modifier votre dossier tant qu'il n'est passé en instruction"
-      = render partial: 'invites/dropdown', locals: { dossier: dossier }
-      .clearfix
+      .header-actions
+        = render partial: 'invites/dropdown', locals: { dossier: dossier }
+        - if dossier.can_be_updated_by_user? && !current_page?(modifier_dossier_path(dossier))
+          = link_to "Modifier mon dossier", modifier_dossier_path(dossier), class: 'button accepted edit-form', 'title'=> "Vous pouvez modifier votre dossier tant qu'il n'est passé en instruction"
 
     %ul.tabs
       = dynamic_tab_item('Résumé', dossier_path(dossier))
diff --git a/db/schema.rb b/db/schema.rb
index b38ea35e9..a4ef748da 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2019_07_17_132452) do
+ActiveRecord::Schema.define(version: 2019_07_17_151228) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -430,6 +430,7 @@ ActiveRecord::Schema.define(version: 2019_07_17_132452) do
     t.integer "user_id"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.text "message"
   end
 
   create_table "module_api_cartos", id: :serial, force: :cascade do |t|
diff --git a/lib/tasks/deployment/20190704133852_create_dummy_paths_for_archived_and_hidden_procedures.rake b/lib/tasks/deployment/20190704133852_create_dummy_paths_for_archived_and_hidden_procedures.rake
new file mode 100644
index 000000000..5562087a5
--- /dev/null
+++ b/lib/tasks/deployment/20190704133852_create_dummy_paths_for_archived_and_hidden_procedures.rake
@@ -0,0 +1,18 @@
+namespace :after_party do
+  desc 'Deployment task: create_dummy_paths_for_archived_and_hidden_procedures'
+  task create_dummy_paths_for_archived_and_hidden_procedures: :environment do
+    puts "Running deploy task 'create_dummy_paths_for_archived_procedures'"
+
+    Procedure.unscoped.archivees.where(path: nil).each do |p|
+      p.update_column(:path, SecureRandom.uuid)
+    end
+
+    Procedure.unscoped.hidden.where(path: nil).each do |p|
+      p.update_column(:path, SecureRandom.uuid)
+    end
+
+    # Update task as completed.  If you remove the line below, the task will
+    # run with every deploy (or every time you call after_party:run).
+    AfterParty::TaskRecord.create version: '20190704133852'
+  end
+end
diff --git a/spec/controllers/admin/procedures_controller_spec.rb b/spec/controllers/admin/procedures_controller_spec.rb
index 4acaf3531..b6504a149 100644
--- a/spec/controllers/admin/procedures_controller_spec.rb
+++ b/spec/controllers/admin/procedures_controller_spec.rb
@@ -15,6 +15,7 @@ describe Admin::ProceduresController, type: :controller do
   let(:duree_conservation_dossiers_dans_ds) { 3 }
   let(:duree_conservation_dossiers_hors_ds) { 6 }
   let(:monavis_embed) { nil }
+  let(:lien_site_web) { 'http://mon-site.gouv.fr' }
 
   let(:procedure_params) {
     {
@@ -26,7 +27,8 @@ describe Admin::ProceduresController, type: :controller do
       cadre_juridique: cadre_juridique,
       duree_conservation_dossiers_dans_ds: duree_conservation_dossiers_dans_ds,
       duree_conservation_dossiers_hors_ds: duree_conservation_dossiers_hors_ds,
-      monavis_embed: monavis_embed
+      monavis_embed: monavis_embed,
+      lien_site_web: lien_site_web
     }
   }
 
@@ -331,23 +333,26 @@ describe Admin::ProceduresController, type: :controller do
   end
 
   describe 'PUT #publish' do
-    let(:procedure) { create(:procedure, administrateur: admin) }
-    let(:procedure2) { create(:procedure, :published, administrateur: admin) }
-    let(:procedure3) { create(:procedure, :published) }
+    let(:procedure) { create(:procedure, administrateur: admin, lien_site_web: lien_site_web) }
+    let(:procedure2) { create(:procedure, :published, administrateur: admin, lien_site_web: lien_site_web) }
+    let(:procedure3) { create(:procedure, :published, lien_site_web: lien_site_web) }
+    let(:lien_site_web) { 'http://some.administration/' }
 
     context 'when admin is the owner of the procedure' do
       before do
-        put :publish, params: { procedure_id: procedure.id, path: path }
+        put :publish, params: { procedure_id: procedure.id, path: path, lien_site_web: lien_site_web }
         procedure.reload
         procedure2.reload
       end
 
       context 'procedure path does not exist' do
         let(:path) { 'new_path' }
+        let(:lien_site_web) { 'http://mon-site.gouv.fr' }
 
         it 'publish the given procedure' do
           expect(procedure.publiee?).to be_truthy
           expect(procedure.path).to eq(path)
+          expect(procedure.lien_site_web).to eq(lien_site_web)
           expect(response.status).to eq 302
           expect(flash[:notice]).to have_content 'Démarche publiée'
         end
@@ -355,26 +360,29 @@ describe Admin::ProceduresController, type: :controller do
 
       context 'procedure path exists and is owned by current administrator' do
         let(:path) { procedure2.path }
+        let(:lien_site_web) { 'http://mon-site.gouv.fr' }
 
         it 'publish the given procedure' do
           expect(procedure.publiee?).to be_truthy
           expect(procedure.path).to eq(path)
+          expect(procedure.lien_site_web).to eq(lien_site_web)
           expect(response.status).to eq 302
           expect(flash[:notice]).to have_content 'Démarche publiée'
         end
 
         it 'archive previous procedure' do
           expect(procedure2.archivee?).to be_truthy
-          expect(procedure2.path).to be_nil
         end
       end
 
       context 'procedure path exists and is not owned by current administrator' do
         let(:path) { procedure3.path }
+        let(:lien_site_web) { 'http://mon-site.gouv.fr' }
 
         it 'does not publish the given procedure' do
           expect(procedure.publiee?).to be_falsey
           expect(procedure.path).not_to match(path)
+          expect(procedure.lien_site_web).to match(lien_site_web)
           expect(response.status).to eq 200
         end
 
@@ -387,10 +395,12 @@ describe Admin::ProceduresController, type: :controller do
 
       context 'procedure path is invalid' do
         let(:path) { 'Invalid Procedure Path' }
+        let(:lien_site_web) { 'http://mon-site.gouv.fr' }
 
         it 'does not publish the given procedure' do
           expect(procedure.publiee?).to be_falsey
           expect(procedure.path).not_to match(path)
+          expect(procedure.lien_site_web).to match(lien_site_web)
           expect(response).to redirect_to :admin_procedures
           expect(flash[:alert]).to have_content 'Lien de la démarche invalide'
         end
@@ -413,10 +423,25 @@ describe Admin::ProceduresController, type: :controller do
         expect(flash[:alert]).to have_content 'Démarche inexistante'
       end
     end
+
+    context 'when the admin does not provide a lien_site_web' do
+      before do
+        put :publish, params: { procedure_id: procedure.id, path: path, lien_site_web: lien_site_web }
+        procedure.reload
+      end
+      context 'procedure path is valid but lien_site_web is missing' do
+        let(:path) { 'new_path2' }
+        let(:lien_site_web) { nil }
+
+        it 'does not publish the given procedure' do
+          expect(procedure.publiee?).to be_falsey
+        end
+      end
+    end
   end
 
   describe 'PUT #archive' do
-    let(:procedure) { create(:procedure, :published, administrateur: admin) }
+    let(:procedure) { create(:procedure, :published, administrateur: admin, lien_site_web: lien_site_web) }
 
     context 'when admin is the owner of the procedure' do
       before do
@@ -432,7 +457,7 @@ describe Admin::ProceduresController, type: :controller do
 
       context 'when owner want to re-enable procedure' do
         before do
-          put :publish, params: { procedure_id: procedure.id, path: 'fake_path' }
+          put :publish, params: { procedure_id: procedure.id, path: 'fake_path', lien_site_web: lien_site_web }
           procedure.reload
         end
 
diff --git a/spec/factories/procedure.rb b/spec/factories/procedure.rb
index 2e5bd901d..88bc8faa9 100644
--- a/spec/factories/procedure.rb
+++ b/spec/factories/procedure.rb
@@ -10,6 +10,7 @@ FactoryBot.define do
     duree_conservation_dossiers_dans_ds { 3 }
     duree_conservation_dossiers_hors_ds { 6 }
     ask_birthday { false }
+    lien_site_web { "https://mon-site.gouv" }
 
     transient do
       administrateur {}
@@ -37,7 +38,7 @@ FactoryBot.define do
       after(:build) do |procedure, _evaluator|
         procedure.for_individual = true
         procedure.types_de_champ << create(:type_de_champ, libelle: 'Texte obligatoire', mandatory: true)
-        procedure.publish!(procedure.administrateurs.first, generate(:published_path))
+        procedure.publish!(procedure.administrateurs.first, generate(:published_path), procedure.lien_site_web)
       end
     end
 
@@ -147,13 +148,13 @@ FactoryBot.define do
 
     trait :published do
       after(:build) do |procedure, _evaluator|
-        procedure.publish!(procedure.administrateurs.first, generate(:published_path))
+        procedure.publish!(procedure.administrateurs.first, generate(:published_path), procedure.lien_site_web)
       end
     end
 
     trait :archived do
       after(:build) do |procedure, _evaluator|
-        procedure.publish!(procedure.administrateurs.first, generate(:published_path))
+        procedure.publish!(procedure.administrateurs.first, generate(:published_path), procedure.lien_site_web)
         procedure.archive!
       end
     end
@@ -162,14 +163,14 @@ FactoryBot.define do
       # For now the behavior is the same than :archived
       # (it may be different in the future though)
       after(:build) do |procedure, _evaluator|
-        procedure.publish!(procedure.administrateurs.first, generate(:published_path))
+        procedure.publish!(procedure.administrateurs.first, generate(:published_path), procedure.lien_site_web)
         procedure.archive!
       end
     end
 
     trait :hidden do
       after(:build) do |procedure, _evaluator|
-        procedure.publish!(procedure.administrateurs.first, generate(:published_path))
+        procedure.publish!(procedure.administrateurs.first, generate(:published_path), procedure.lien_site_web)
         procedure.hide!
       end
     end
diff --git a/spec/features/admin/procedure_creation_spec.rb b/spec/features/admin/procedure_creation_spec.rb
index 8ff486f90..83f11a236 100644
--- a/spec/features/admin/procedure_creation_spec.rb
+++ b/spec/features/admin/procedure_creation_spec.rb
@@ -123,6 +123,7 @@ feature 'As an administrateur I wanna create a new procedure', js: true do
 
         within '#publish-modal' do
           expect(page).to have_field('procedure_path')
+          fill_in 'lien_site_web', with: 'http://some.website'
           click_on 'publish'
         end
 
diff --git a/spec/models/procedure_spec.rb b/spec/models/procedure_spec.rb
index 81f94e500..22621a3f7 100644
--- a/spec/models/procedure_spec.rb
+++ b/spec/models/procedure_spec.rb
@@ -554,7 +554,7 @@ describe Procedure do
 
     before do
       Timecop.freeze(now)
-      procedure.publish!(procedure.administrateurs.first, "example-path")
+      procedure.publish!(procedure.administrateurs.first, "example-path", procedure.lien_site_web)
     end
     after { Timecop.return }
 
@@ -690,19 +690,9 @@ describe Procedure do
 
     subject { procedure.export_filename(:csv) }
 
-    context "with a path" do
-      let(:procedure) { create(:procedure, :published) }
+    let(:procedure) { create(:procedure, :published) }
 
-      it { is_expected.to eq("dossiers_#{procedure.path}_2018-01-02_23-11.csv") }
-    end
-
-    context "without a path" do
-      let(:procedure) { create(:procedure, :archived) }
-
-      it do
-        is_expected.to eq("dossiers_procedure-#{procedure.id}_2018-01-02_23-11.csv")
-      end
-    end
+    it { is_expected.to eq("dossiers_#{procedure.path}_2018-01-02_23-11.csv") }
   end
 
   describe '#new_dossier' do
diff --git a/spec/views/admin/procedures/edit.html.haml_spec.rb b/spec/views/admin/procedures/edit.html.haml_spec.rb
index 28d4cc71b..cb09b0ba3 100644
--- a/spec/views/admin/procedures/edit.html.haml_spec.rb
+++ b/spec/views/admin/procedures/edit.html.haml_spec.rb
@@ -2,7 +2,7 @@ require 'spec_helper'
 
 describe 'admin/procedures/edit.html.haml', type: :view, vcr: { cassette_name: 'admin_procedure_edit' } do
   let(:logo) { Rack::Test::UploadedFile.new("./spec/fixtures/files/logo_test_procedure.png", 'image/png') }
-  let(:procedure) { create(:procedure, logo: logo) }
+  let(:procedure) { create(:procedure, logo: logo, lien_site_web: 'http://some.website') }
 
   before do
     assign(:procedure, procedure)
diff --git a/spec/views/admin/procedures/show.html.haml_spec.rb b/spec/views/admin/procedures/show.html.haml_spec.rb
index 57715a9a7..9c5c8deef 100644
--- a/spec/views/admin/procedures/show.html.haml_spec.rb
+++ b/spec/views/admin/procedures/show.html.haml_spec.rb
@@ -41,7 +41,7 @@ describe 'admin/procedures/show.html.haml', type: :view do
 
   describe 'procedure is published' do
     before do
-      procedure.publish!(procedure.administrateurs.first, 'fake_path')
+      procedure.publish!(procedure.administrateurs.first, 'fake_path', procedure.lien_site_web)
       procedure.reload
       render
     end
@@ -59,7 +59,7 @@ describe 'admin/procedures/show.html.haml', type: :view do
 
   describe 'procedure is archived' do
     before do
-      procedure.publish!(procedure.administrateurs.first, 'fake_path')
+      procedure.publish!(procedure.administrateurs.first, 'fake_path', procedure.lien_site_web)
       procedure.archive!
       procedure.reload
       render