Cannot add projects to existing group milestones
This is a follow-up to #3488 (closed).
Within the Web UI, it doesn't look like it's possible to add projects to already-existing group milestones. Projects can only be added to milestones on milestone creation. So the UX here is dreadful if one wishes to add another project later. It's necessary to perform the following as a work-around:
- Create any new projects to be included in group milestones.
- Clone all existing group milestones.
- Move all group issues (from every single project) into the respective new milestones.
- Delete the old milestones without the new projects.
It should be possible to edit group milestones to add or remove projects.