The HDMI connector on my VIP622 is flaky so I had Dish Network send me a new unit. Belatedly I realized that, were I to swap units, I would lose all of the stuff I had recorded via the DVR. May I take the hard drive out of the old unit and put it in the new? I am technically able to swap disk drives but I'm not sure if the drives are somehow linked to a specific box or not. If I were to swap drives, I assume that I would have to use my old card as well; Yes?