Steam doesn't help when you've installed the game on the wrong account... When I buy BoM I will install it on my actual account - but does that mean technically I no longer own CoD - and they cannot be merged? For the same obvious reason that I cannot merge my game with another I don't 'own' even though I bought both and are both installed on the same computer?
My fault I know - was too excited... I fear I may have to buy CoD again.
But I am hoping that when that time arrives that CoD will be worth about $20 or less, which I am more than happy to pay!