I just upgraded to a 2 Hopper & 2 Joey configuration. I backed up a bunch of recordings off my 722 & 922 prior to the switch on 2 separate EHDs. Now I have been able to access the recordings on one but not on the other. Anyone know why? When I connect the second I'm asked to format the drive. The drive had already been formatted to work with my old 922 & 722. Thanks in advance.