So i want to upgrade to mrv and have an hr20-700, h20 and r15 all without swm. I know the h20 will be swapped but what i want to do is upgrade the r15 to an hd-dvr but im not yet ready to purchase an hdtv for that particular room. I just want to have the whole install finished at one shot. Will the installer install the box without the hdtv? If so if i record an hd program on the hr20 will mrv work to the new box and downconvert to sd resolution? Thanks!