Originally Posted by
Doombringer
now i'm not a scientist, but i THINK this will work. i did something very similar, just going the other way. i played on ps2 then xbox then recently installed the game on my laptop just so i'd have it when i was away from home.
since i had already purchased every expansion in the game for 360, when i bought the ultimate edition for pc i got a download code i ended up not needing. (was even able to give it to a returning associate and bam, they had all the aby expansions.)
so stuff like that seems to be connected to your account, not your platform.