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how do i get my new gamer tag up its only my old one
The man in black fled across the desert, and the gunslinger followed.Mapping Bungie's world domination
Um... maybe check out the section titled "Changing Your Email Address or Password" on this page. Of course, that would be assuming that you linked your new gamertag to a passport that is different than the one you use here. If that is not the case, I'd check out the help section over at Xbox.com.