Thread:Merrystar/@comment-31091-20150401001503/@comment-11001-20150403010516

I think you would have to log out of RtKat3 and log in with Facebook Connect. Then go to Special:Preferences in that account. If you want to be able to access it in future then make sure there is an email address and password. After that disconnect the account from Facebook. Then you can log out and log back in as Rtkat3, and connect your Facebook to it instead.