diff --git a/CHANGELOG.md b/CHANGELOG.md
index 09a2314d7..62b84114b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -41,6 +41,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Deprecated
 - Budget's `description_*` columns will be erased from database in next release. Please run rake task `budgets:phases:generate_missing` to migrate them. Details at Warning section of https://github.com/consul/consul/pull/2323
+- Budget::Investment's `internal_comments` attribute usage was removed, because of https://github.com/consul/consul/pull/2403, run rake task `investments:internal_comments:migrate_to_thread` to migrate existing values to the new internal comments thread. In next release database column will be removed.
 
 ### Removed
 - Spending Proposals urls from sitemap, that model is getting entirely deprecated soon.
diff --git a/app/controllers/valuation/budget_investments_controller.rb b/app/controllers/valuation/budget_investments_controller.rb
index 643ccbc74..a9064a301 100644
--- a/app/controllers/valuation/budget_investments_controller.rb
+++ b/app/controllers/valuation/budget_investments_controller.rb
@@ -95,7 +95,7 @@ class Valuation::BudgetInvestmentsController < Valuation::BaseController
     def valuation_params
       params.require(:budget_investment).permit(:price, :price_first_year, :price_explanation,
                                                 :feasibility, :unfeasibility_explanation,
-                                                :duration, :valuation_finished, :internal_comments)
+                                                :duration, :valuation_finished)
     end
 
     def restrict_access_to_assigned_items
diff --git a/app/views/valuation/budget_investments/_written_by_valuators.html.erb b/app/views/valuation/budget_investments/_written_by_valuators.html.erb
index eb2d0e81d..c4c091389 100644
--- a/app/views/valuation/budget_investments/_written_by_valuators.html.erb
+++ b/app/views/valuation/budget_investments/_written_by_valuators.html.erb
@@ -47,11 +47,6 @@
   </p>
 <% end %>
 
-<% if @investment.internal_comments.present? %>
-  <h2><%= t("valuation.budget_investments.show.internal_comments") %></h2>
-  <%= explanation_field @investment.internal_comments %>
-<% end %>
-
 <div class="tabs-panel is-active" id="tab-comments">
   <% unless @comment_tree.nil? %>
     <%= render partial: '/comments/comment_tree', locals: { comment_tree: @comment_tree,
diff --git a/app/views/valuation/budget_investments/edit.html.erb b/app/views/valuation/budget_investments/edit.html.erb
index 7d3350fe6..c7321cf19 100644
--- a/app/views/valuation/budget_investments/edit.html.erb
+++ b/app/views/valuation/budget_investments/edit.html.erb
@@ -89,13 +89,6 @@
     </div>
   </div>
 
-  <div class="row">
-    <div class="small-12 column">
-      <%= f.label :internal_comments, t("valuation.budget_investments.edit.internal_comments_html") %>
-      <%= f.text_area :internal_comments, label: false, rows: 3 %>
-    </div>
-  </div>
-
   <div class="row">
     <div class="actions small-12 medium-4 column">
       <%= f.submit(class: "button expanded large", value: t("valuation.budget_investments.edit.save")) %>
diff --git a/config/locales/en/valuation.yml b/config/locales/en/valuation.yml
index d1c267305..fa53a432c 100644
--- a/config/locales/en/valuation.yml
+++ b/config/locales/en/valuation.yml
@@ -53,7 +53,6 @@ en:
         undefined: Undefined
         valuation_finished: Valuation finished
         duration: Time scope
-        internal_comments: Internal comments
         responsibles: Responsibles
         assigned_admin: Assigned admin
         assigned_valuators: Assigned valuators
@@ -71,7 +70,6 @@ en:
         valuation_finished_alert: "Are you sure you want to mark this report as completed? If you do it, it can no longer be modified."
         not_feasible_alert: "An email will be sent immediately to the author of the project with the report of unfeasibility."
         duration_html: Time scope
-        internal_comments_html: Internal comments
         save: Save changes
       notice:
         valuate: "Dossier updated"
diff --git a/config/locales/es/valuation.yml b/config/locales/es/valuation.yml
index 15c0c6d2c..9ddb2d009 100644
--- a/config/locales/es/valuation.yml
+++ b/config/locales/es/valuation.yml
@@ -53,7 +53,6 @@ es:
         undefined: Sin definir
         valuation_finished: Informe finalizado
         duration: Plazo de ejecución
-        internal_comments: Comentarios internos
         responsibles: Responsables
         assigned_admin: Administrador asignado
         assigned_valuators: Evaluadores asignados
@@ -71,7 +70,6 @@ es:
         valuation_finished_alert: "¿Estás seguro/a de querer marcar este informe como completado? Una vez hecho, no se puede deshacer la acción."
         not_feasible_alert: "Un email será enviado inmediatamente al autor del proyecto con el informe de inviabilidad."
         duration_html: Plazo de ejecución <small>(opcional, dato no público)</small>
-        internal_comments_html: Comentarios y observaciones <small>(para responsables internos, dato no público)</small>
         save: Guardar Cambios
       notice:
         valuate: "Dossier actualizado"
diff --git a/lib/tasks/investments.rake b/lib/tasks/investments.rake
new file mode 100644
index 000000000..f9619b5ed
--- /dev/null
+++ b/lib/tasks/investments.rake
@@ -0,0 +1,12 @@
+namespace :investments do
+  namespace :internal_comments do
+    desc "Migrate internal_comments textarea to a first comment on internal thread"
+    task migrate_to_thread: :environment do
+      comments_author_id = Administrator.first.user.id
+      Budget::Investment.where.not(internal_comments: [nil, '']).find_each do |investment|
+        Comment.create(commentable: investment, user_id: comments_author_id,
+                       body: investment.internal_comments, valuation: true)
+      end
+    end
+  end
+end
diff --git a/spec/features/valuation/budget_investments_spec.rb b/spec/features/valuation/budget_investments_spec.rb
index 91bf20985..7d8d1bfd5 100644
--- a/spec/features/valuation/budget_investments_spec.rb
+++ b/spec/features/valuation/budget_investments_spec.rb
@@ -234,7 +234,6 @@ feature 'Valuation budget investments' do
       within('#duration') { expect(page).to have_content('Undefined') }
       within('#feasibility') { expect(page).to have_content('Undecided') }
       expect(page).not_to have_content('Valuation finished')
-      expect(page).not_to have_content('Internal comments')
     end
 
     scenario 'Edit dossier' do
@@ -248,7 +247,6 @@ feature 'Valuation budget investments' do
       fill_in 'budget_investment_price_explanation', with: 'Very cheap idea'
       choose  'budget_investment_feasibility_feasible'
       fill_in 'budget_investment_duration', with: '19 months'
-      fill_in 'budget_investment_internal_comments', with: 'Should be double checked by the urbanism area'
       click_button 'Save changes'
 
       expect(page).to have_content "Dossier updated"
@@ -262,8 +260,6 @@ feature 'Valuation budget investments' do
       within('#duration') { expect(page).to have_content('19 months') }
       within('#feasibility') { expect(page).to have_content('Feasible') }
       expect(page).not_to have_content('Valuation finished')
-      expect(page).to have_content('Internal comments')
-      expect(page).to have_content('Should be double checked by the urbanism area')
     end
 
     scenario 'Feasibility can be marked as pending' do
@@ -289,7 +285,7 @@ feature 'Valuation budget investments' do
     scenario 'Feasibility selection makes proper fields visible', :js do
       feasible_fields = ['Price (€)', 'Cost during the first year (€)', 'Price explanation', 'Time scope']
       unfeasible_fields = ['Feasibility explanation']
-      any_feasibility_fields = ['Valuation finished', 'Internal comments']
+      any_feasibility_fields = ['Valuation finished']
       undecided_fields = feasible_fields + unfeasible_fields + any_feasibility_fields
 
       visit edit_valuation_budget_budget_investment_path(@budget, @investment)