Evaluate adding transaction support to MoveService and BulkUpdateService
The following discussion from gitlab-ce!30216 should be addressed:
- [ ] @mdelaossa started a [discussion](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/30216#note_187653226): (+7 comments)
> Should we wrap this in a transaction? Or is it ok that we only move some issues and not all of them?
There are two places where transactions might be missing:
* `MoveService#execute_multiple` (and maybe `UpdateService`?)
* `BulkUpdateService#execute` (maybe this should be evaluated / implemented in another / separate issue)
issue