My daughter has an existing account on our XBox, as does my son. Last year I created an XBox live account for my son and everything appeared to work correctly - his gamertag shows up as an XBox Live account and the account was intact.
I recently tried to do the same for my daughter, but have ended up with two profiles on my XBox with the same gamertag(!). The original one is intact, but is not associated with XBox Live, and the new one has no gamerscore, customizations, etc. but is an XBox Live account.
So, how can I merge these two together so that I have a single profile on the XBox that contains all existing score/achivements/customizations/etc. and is an XBox live account?
I read an earlier post from 2012 about moving saves, etc. that said to simply move stuff between storage devices, but this sounds iffy to me. We would prefer not to lose existing stuff just for the sake of having an XBox Live account.