ok heres the deal. My mom has an account down in florida with three lines. I have an account with my wife in nebraska with two lines. Im an authorized user on my moms acount and she said I could use her upgrades. I have read the upgrade guide above and wanted to verify the "upgrade swap". I want to make sure that I can go into the att store on the 21st and upgrade two of her lines WITHOUT activating the sims on her account and erasing her dumb phone sims down in florida? The upgrade guide seems to point that this is doable I just wanted to check in the forums. I remember on the iphone 4 launch I ordered online for her upgrades, got the phones in the mail and threw the sims away and just put mine in and good to go no problems. Unfortunately I wasnt able to pre order this time so I get to have fun standing in line. Thanks for the help!