Had extensive search of the forums but no on seems to have the same issue.
I got an xbox a few months back, and played away on it, and now want to connect my profile up to live, but it always wants me to create a new one rather than to 'log in' with this one that I made a while ago for pc purposes. I've seen other discussions that profiles cant be merged but I don't really care about this accounts survival or it's merits (just some AoE online data), or the email it's associated with; it's just that I'd like the username for my upcoming xbox-ing shenanigans.
Two possible solutions I which were mentioned in problems almost like mine were:
Paying points to change the name of this account and then again to change a made up new one (I like it, but not THAT much)
Doing something with the swapping of the email addresses linked with each profile, but didn't think it was relevant to me as I don't have any online profiles on my xbox, just the offline account i want to bring online with this name.
Hope some will will be able to help