1 files changed, 11 insertions, 3 deletions
diff --git a/app/services/projects/transfer_service.rb b/app/services/projects/transfer_service.rb
index 17da77fe950..51c0989ee55 100644
--- a/app/services/projects/transfer_service.rb
+++ b/app/services/projects/transfer_service.rb
@@ -2,11 +2,11 @@
 
 # Projects::TransferService class
 #
-# Used for transfer project to another namespace
+# Used to transfer a project to another namespace
 #
 # Ex.
-#   # Move projects to namespace with ID 17 by user
-#   Projects::TransferService.new(project, user, namespace_id: 17).execute
+#   # Move project to namespace by user
+#   Projects::TransferService.new(project, user).execute(namespace)
 #
 module Projects
   class TransferService < BaseService
@@ -103,6 +103,8 @@ module Projects
 
         update_repository_configuration(@new_path)
 
+        remove_issue_contacts
+
         execute_system_hooks
       end
 
@@ -254,6 +256,12 @@ module Projects
         namespace_traversal_ids: new_namespace.traversal_ids
       }
     end
+
+    def remove_issue_contacts
+      return unless @old_group&.root_ancestor != @new_namespace&.root_ancestor
+
+      CustomerRelations::IssueContact.delete_for_project(project.id)
+    end
   end
 end