Ability to mark a Version, Milestone, or Component as inactive (BB-10376)
Currently, all Versions, Milestones, and Components show up in the drop-down lists on the pages to create or edit new Issues. It would be great to be able to mark some of those as "complete" or "inactive" or whatever, so they no longer show up as options. It doesn't make sense to be able to target an issue for a milestone that has passed or a component that no longer exists.
Currently, you can delete an item, but you then lose the history.