Game Center Username and Apple ID Username
I have an Apple ID and have a username when I log on. I also have Game Center and want to use that same username, but it indicates that username is taken already. I think years ago I might have used the same username with a different Apple ID. That is when I wasn't quite clear about things! Is there anyway I can find out if I used the username with an old ID?
iPhone 6 Plus, iOS 8