We have a workflow where we reuse our Current Sprint list each sprint and just move our tasks to a past sprints folder when the sprint is over.

The problem with this new multiple lists functionality is that when we move stuff to another list, it moves them from their original locations.

And there is no way to REMOVE from secondary lists in bulk.

So if I have 20 tasks that were added to our current sprint (as a secondary list, not "home"), there is no way to remove them in bulk. I have to go through one by one.

If there were little checkboxes for the lists that tasks are added to, and you could uncheck those (kind of like how you do with selecting lists in certain areas of the app).

They'd have to be grayed out when you have a selection with multiple items that aren't added to the same lists... but if you clicked it and made that list active/blue, it'd add the selected tasks to that same list, and if you clicked it again to deselect it, it would remove all those items from that additional list.