I was about to mass edit the elfenlied tag to elfen_lied (I've never seen it as one word on anything official or even in general usage) but unintentionally hit enter when the change to: box was still empty.
This removed every elfenlied tag >_> There weren't many so I was able to manually revert them, but man it would suck to accidentally do that to something with like 300 images.
Is there a way for it to check that you're changing *to* something so this doesn't happen (like if someone hits save instead of preview, for another example). I know that deleting a tag is a legit use too, but maybe there could be a prompt or something that asks if you really want to delete the tag?
Updated