Ok - sry if someone asked this - I couldn't find it. I picked up 2 copies of Bigs 2 (360) today that I want to trade in at Gamestop. I read they won't let you trade in 2 copies of the same game (also read sometimes they do but it's ymmv), but will they allow me to trade them in at different stores? I was going to trade one copy with another game for the $40 TIV deal for Left 4 Dead2, and then drive to a different store and trade in the other copy with 5 other games for the 40% trade in bonus. Do they allow that or do they maintain a history of my trade ins? Thanks!