I was going through my wishlists and trying to move items by using the drop-down menu, but after a while, when I refreshed, the items would still be there, having not moved. I thought it was a cache issue and tried hard refreshing, but that hasn't done anything. When I remove items, they are still there until I hard refresh, but if I move items, even when I hard refresh, they stay where they were. I use Opera normally, but I tried Safari and Firefox, and it still didn't work.

Did you click the "edit wishlist" button after selecting the categories on the drop downs?

You're right, now I feel so dumb X) I thought it worked like Vaults where it would update them automatically.

Yeah, it being different than vaults can be confusing so I understand how you could think it worked like that :)