I have had a new account for about a year now and I want to play Halo 3 with it. Most of the playlists on Halo 3 need all DLC map packs to play them. I purchased all the map packs with this account on the same Xbox. It says they are on the Xbox when I check but they won't come up when I use my new account. Is there a way to transger my purchases or what?