I did my Roamio upgrade about September 2013 when I did not have to re-pair the cable card (the VAL had the V not the ? the card was a Moto). My systems Cable cards have a time out of about 45 days, after 45 days of no connection to the Comcast head end all you can get is the network basic stations, takes a phone call to Comcast or let the TiVo run for about 4 or 5 days and all the stations come back, if the card is not paired (VAL=?) you will not get the premium stations like HBO, but I will get the extended basic stations like CNN. This is only one person experience on one Comcast system in Hartford CT, YMMV. One of my TiVos is in a guest room unplugged until I have guest coming over, I then plug it in about a week in advance so all the stations are received when my guest arrive.