So I was clearing out my old legacy gallery and activated a GA medal just to use the "Collection" quickstock option on my minions...but apparently it doesn't work. I then dug through the Gold Forums and found a post from someone saying how great it was that 'move to collections' no longer supported minion zoo, but no post from staff. But, there was still a blurb above the quick stock page that seems to indicate that this feature is supposed to work on all of the collections.

What exactly is the "Collection" quickstock supposed to support?

Have you checked your preferences (link)? There's an option there to enable or disable quickstocking minions. c: (It's worded a little oddly, so you shouldn't have it ticked if you want it to work.)

Thank you! I didn't know that existed

No worries! c: