There should be an undo button for certain actions. I just accidental clicked "Remove" on a torrent. Now, I need to find it again and merge.

i am pretty sure that if you accidentally remove a torrent you can click the remove button and it gives you the option to undo the remove, but only for a limited time.

I see. I hadn't used the remove button before; I've always removed through the context menu. Thanks.

Still, a universal undo button for all undoable actions would be quite nice. You accidentally messed up the priority of a huge list? Undo! You renamed a foreign language file that either you or your computer can't retype? Undo! etc etc

+1 for a permantent and general undo option, very useful,