AOA card number 333 (tantadlin) says: "discard a random card from the enemy archives".

All cards that capture an enemy card to a friendly archive say "if that creature leaves your archives, put it in it's owner's hand" (like Collector worm).

How'd you fix that?

I don't see any conflict between those two effects.

Oh wait, Are you asking what if you discard a card from your enemy's archive and it is a card of yours that was in their archive? I would hazard a guess that you as the active player choose whether it goes to your hand or to your discard pile. Active player resolving simultaneous effects and what not.

Yeah, i was wondering what would happen if you discarded one of your own cards from the opponent's archives.

You would go to discard it, but then it would be leaving your opponent's archives and would come back to you. It doesn't say it comes back when your opponent picks up their archives, only when your card leaves the archives