Moving AT&T lines from one account to another.
I'd like to move my parents' AT&T lines from their account (which would then close) onto my line. I have a Mobile Share Value account. Can you move an AT&T line from one account to another? It's technically not porting, since it's still in the AT&T ecosystem. And do they have to be out of contract to avoid ETF? Or can they just bring their ETF date with them to the new account?