I saved a recording of a football game from a 722 onto my EHD. I had heard that EHD could be moved between VIP receivers. So I took EHD to my bedroom 612 and plugged it in. 612 recognized it right away and I navigated to my media and selected my recording to watch. 4 minutes in locked event screen with password screen came on. I hit cancel because I wasn't sure what was going on as the rating for the event was not above pg13 which I have set. Then the screen came on telling me that there was no EHD plugged into receiver. No matter what I did after that 612 would not recognize EHD. I took EHD back to my 722 and plugged it in and it worked fine. Did I do something wrong?