Yes of course! Just plug your newly-repositioned TV1 into either of the HD outputs of TV1 on your 722. These include hdmi and component outputs. All the rest, including all the outputs for TV2, are SD only.
So...you have moved the TV that was in the TV2 location such that it is now where the 722K is physically located, correct? How do you have the 722k connected to the TV?
Have you changed the TV to the proper "Input" to match the connection with the 722k, or are you still looking for the signal on the "channel" that you used to use when it was connected as TV2 in the other room?
That was my first thought after reading the first post, but then their last post made it sound like maybe they'd moved the TV to where the receiver was already located. For sure, I think we need a little more clarification to help them.