[Tohopekaliga]

The exchange works entirely based on the inventory of a specific user. (A user I added expressly for that.) So, yes, I generally add a bunch of event items to the inventory at the beginning to ensure it works.



It does a bit of a lookup to decide what an item is. If it's one of the shop freebies, it won't let you exchange it, and if you donate it, it deletes it.

If it's a shop item (in common shop & costs something), it'll swap it with a different shop item. ...I honestly can't remember offhand if token shop items are lumped in with that or not. They might be.

If it's a donation item (costs runes), it won't let you do anything with it.

If it's in the currently specified event item set, it swaps among those.

If it's anything else, they swap among themselves. That means RIG, event, and game items are treated the same.