We just had the same upgrade that you did. I told him I wanted to keep one of the old ones to use in the camper.The installer left all the old boxes and told me which one to keep. DTV sent an envelope to return just the cards in the old boxes except the one I kept. The installer said he had deactivated all the old cards so I would not be charged for them and that I could go online anytime to reactivate the old card to use in the camper and then go online and deactivate it until next time. I have done this several times and it works well. If you did not keep an old card, you can get a box a bunch of places, call DTV and they will send you a card for it for a one time activation fee ($20.00 I think) then you are set to go.