DirecTV is telling me that my DVR40 DTiVo will "not work at all" if I take their Whole Home DVR system, which includes a switch to the single wire multiswitch. I'm seeing stuff like this on the internet: http://www.swm8.com/swm-faq.php which seems to say that the single wire multiswitch (the SWM8) comes with 3 "legacy ports." That seems pretty clear, and yet DirecTV is telling me it can't work. I'd like to keep my upgraded DVR40 for its huge SD program capacity. Were the customer service reps right, or were they underinformed, as I suspect?