I'm not 100% sure a FanPost is the most appropriate location to post this, so apologies in advance if I missed some other area to post a question like this.

I'm about to enter my third season as a 12-game plan holder, but I've gone from 2 to 3 seats for this season.  This introduces a potential conundrum that I didn't encounter when I only had 2 seats.  Specifically, I'm wondering about some details of exchanging tickets.

The scenario I'm wondering about is as follows: If I have 3 tickets to Game A (A1, A2, and A3) and 3 tickets to Game B (B1, B2, and B3), but the third person can't go to either game, am I allowed to trade A3 and B3 for 2 tickets to one of the designated exchange games? Or does the exchange program work such that I would have to trade all my tickets for Game A for the same number of tickets to the exchange game?

Thanks!