Take care about data being rewritten when moving issue

app/services/issues/move_service.rb

@@ -49,9 +49,7 @@ module Issues
     def new_issue_params
       new_params = { id: nil, iid: nil, milestone_id: nil, label_ids: [],
                      project_id: @project_new.id,
-                     author_id: @issue_old.author_id,
-                     description: rewrite_references(@issue_old),
-                     updated_by_id: current_user.id }
+                     description: rewrite_references(@issue_old) }
       params.merge(new_params)
     end

spec/services/issues/move_service_spec.rb

@@ -2,13 +2,18 @@ require 'spec_helper'
 describe Issues::MoveService, services: true do
   let(:user) { create(:user) }
+  let(:author) { create(:user) }
   let(:title) { 'Some issue' }
   let(:description) { 'Some issue description' }
   let(:old_project) { create(:project) }
-  let(:old_issue) { create(:issue, title: title, description: description, project: old_project) }
   let(:new_project) { create(:project) }
   let(:issue_params) { old_issue.serializable_hash }
+  let(:old_issue) do
+    create(:issue, title: title, description: description,
+           project: old_project, author: author)
+  end
+
   let(:move_service) do
     described_class.new(old_project, user, issue_params, old_issue, new_project_id)
   end
@@ -73,6 +78,19 @@ describe Issues::MoveService, services: true do
           expect(old_issue.changed?).to be false
           expect(new_issue.changed?).to be false
         end
+
+        it 'changes author' do
+          expect(new_issue.author).to eq user
+        end
+
+        it 'removes data that is invalid in new context' do
+          expect(new_issue.milestone).to be_nil
+          expect(new_issue.labels).to be_empty
+        end
+
+        it 'creates a new internal id for issue' do
+          expect(new_issue.iid).to be 1
+        end
       end
       context 'issue with notes' do