diff --git a/app/assets/javascripts/app/controllers/_ui_element/ticket_selector.coffee b/app/assets/javascripts/app/controllers/_ui_element/ticket_selector.coffee
index 8ea489efd..0ba4484fa 100644
--- a/app/assets/javascripts/app/controllers/_ui_element/ticket_selector.coffee
+++ b/app/assets/javascripts/app/controllers/_ui_element/ticket_selector.coffee
@@ -91,7 +91,6 @@ class App.UiElement.ticket_selector
 
       else
         for row in App[groupMeta.model].configure_attributes
-
           # ignore passwords and relations
           if row.type isnt 'password' && row.name.substr(row.name.length-4,4) isnt '_ids' && row.searchable isnt false
             config = _.clone(row)
@@ -121,6 +120,10 @@ class App.UiElement.ticket_selector
         translate: true
         operator: ['is', 'is not']
 
+    # Remove 'has changed' operator from attributes which don't support the operator.
+    ['ticket.created_at', 'ticket.updated_at'].forEach (element_name) ->
+      elements[element_name]['operator'] = elements[element_name]['operator'].filter (item) -> item != 'has changed'
+
     elements['ticket.mention_user_ids'] =
       name: 'mention_user_ids'
       display: 'Subscribe'
diff --git a/lib/transaction_dispatcher.rb b/lib/transaction_dispatcher.rb
index d762858ed..ef34c5497 100644
--- a/lib/transaction_dispatcher.rb
+++ b/lib/transaction_dispatcher.rb
@@ -203,11 +203,6 @@ class TransactionDispatcher
     real_changes = {}
     record.changes_to_save.each do |key, value|
       next if key == 'updated_at'
-      next if key == 'first_response_at'
-      next if key == 'close_at'
-      next if key == 'last_contact_agent_at'
-      next if key == 'last_contact_customer_at'
-      next if key == 'last_contact_at'
       next if key == 'article_count'
       next if key == 'create_article_type_id'
       next if key == 'create_article_sender_id'
diff --git a/spec/models/ticket_spec.rb b/spec/models/ticket_spec.rb
index e7223b9e5..b26764a22 100644
--- a/spec/models/ticket_spec.rb
+++ b/spec/models/ticket_spec.rb
@@ -1704,6 +1704,59 @@ RSpec.describe Ticket, type: :model do
           .to change { NotificationFactory::Mailer.already_sent?(ticket, agent, 'email') }.to(1)
       end
     end
+
+    describe 'Ticket has changed attributes:' do
+      subject!(:ticket) { create(:ticket) }
+
+      let(:group) { create(:group) }
+      let(:condition_field) { nil }
+
+      shared_examples 'updated ticket group with trigger condition' do
+        it 'updated ticket group with has changed trigger condition' do
+          expect { TransactionDispatcher.commit }.to change { ticket.reload.group }.to(group)
+        end
+      end
+
+      before do
+        create(
+          :trigger,
+          condition: { "ticket.#{condition_field}" => { 'operator' => 'has changed', 'value' => 'create' } },
+          perform:   { 'ticket.group_id' => { 'value' => group.id } }
+        )
+
+        ticket.update!(condition_field => Time.zone.now)
+      end
+
+      context "when changing 'first_response_at' attribute" do
+        let(:condition_field) { 'first_response_at' }
+
+        include_examples 'updated ticket group with trigger condition'
+      end
+
+      context "when changing 'close_at' attribute" do
+        let(:condition_field) { 'close_at' }
+
+        include_examples 'updated ticket group with trigger condition'
+      end
+
+      context "when changing 'last_contact_agent_at' attribute" do
+        let(:condition_field) { 'last_contact_agent_at' }
+
+        include_examples 'updated ticket group with trigger condition'
+      end
+
+      context "when changing 'last_contact_customer_at' attribute" do
+        let(:condition_field) { 'last_contact_customer_at' }
+
+        include_examples 'updated ticket group with trigger condition'
+      end
+
+      context "when changing 'last_contact_at' attribute" do
+        let(:condition_field) { 'last_contact_at' }
+
+        include_examples 'updated ticket group with trigger condition'
+      end
+    end
   end
 
   describe 'Mentions:', sends_notification_emails: true do
@@ -2127,5 +2180,4 @@ RSpec.describe Ticket, type: :model do
     end
 
   end
-
 end
diff --git a/spec/system/manage/trigger_spec.rb b/spec/system/manage/trigger_spec.rb
index 4991cd297..535c359e8 100644
--- a/spec/system/manage/trigger_spec.rb
+++ b/spec/system/manage/trigger_spec.rb
@@ -5,6 +5,13 @@ require 'system/examples/pagination_examples'
 
 RSpec.describe 'Manage > Trigger', type: :system do
 
+  def open_new_trigger_dialog
+    visit '/#manage/trigger'
+    click_on 'New Trigger'
+
+    modal_ready
+  end
+
   context 'Selector' do
 
     context 'custom attribute', db_strategy: :reset do
@@ -23,10 +30,7 @@ RSpec.describe 'Manage > Trigger', type: :system do
                                        nulloption: true,
                                      }
 
-        visit '/#manage/trigger'
-        click '.page-header-meta .btn--success'
-
-        modal_ready
+        open_new_trigger_dialog
 
         within '.modal .ticket_selector' do
           find('.js-attributeSelector select').select(attribute.display)
@@ -57,10 +61,7 @@ RSpec.describe 'Manage > Trigger', type: :system do
       it 'shows tag selection list in foreground' do
         tag_item = create :tag_item
 
-        visit '/#manage/trigger'
-        click_on 'New Trigger'
-
-        modal_ready
+        open_new_trigger_dialog
 
         within '.modal .ticket_perform_action' do
           find('.js-attributeSelector select').select('Tags')
@@ -77,4 +78,26 @@ RSpec.describe 'Manage > Trigger', type: :system do
   context 'ajax pagination' do
     include_examples 'pagination', model: :trigger, klass: Trigger, path: 'manage/trigger'
   end
+
+  context "with elements which do not support 'has changed' operator" do
+    it "check 'created_at' element" do
+      open_new_trigger_dialog
+
+      within '.modal .ticket_selector' do
+        find(".js-attributeSelector select option[value='ticket.created_at']").select_option
+
+        expect(page).to have_no_css('select[name="condition::ticket.created_at::operator"] option[value="has changed"]')
+      end
+    end
+
+    it "check 'updated_at' element" do
+      open_new_trigger_dialog
+
+      within '.modal .ticket_selector' do
+        find(".js-attributeSelector select option[value='ticket.updated_at']").select_option
+
+        expect(page).to have_no_css('select[name="condition::ticket.updated_at::operator"] option[value="has changed"]')
+      end
+    end
+  end
 end