Hopefully someone can help with this.
Last night I changed my sons linked email address from one of mine to his own outlook.com address. He was already added as a family member.
When he turned on his xbox one, his gamertag had changed to a generic microsoft one and all his game progresses are no longer there.
If I log on to xbox.com, it still shows his original gamertag and acheivements, but both our xboxes show him as the generic gamertag.
What the hell happened?!! Can it be retreived?
Sorry for the double post