<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=8760) </details> <!--IssueSummary end--> https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8442 introduces the Review model but does not make it importable/exportable. In order to further extend the Review model with new features we will need to make it able to be exported and imported while keeping all the associations. The review model `belongs_to` `project`, `merge_request` and `author` and `has_many` `notes` cc @DouweM @jameslopez