I have a 522 and 622. Well my 522 decided to die tonight. I decided to take the opportunity to upgrade since they have to send me a new receiver anyway. Do I have to send the remotes for the 522 back with it? I know the same remotes control my 522 and 622 I would assume they would also work on the 722. I would like to keep them if I could. Would dish charge me some ridiculous fee if I did not send them back?