Good day TiVo wonks! I've recently upgraded to the Hydra interface for the Roamio, which makes use of the Back button on the remote. Yay? Now I don't seem to have an equivalent for the Logitech Harmony Elite. Boo. Does anyone know how I get a Back code to map the obvious back button on the Harmony? Not looking for "I don't use that remove" or "I use this other remote". Many thanks!