Looks like I found an explanation, under the Dish Website topic of Digital Rights Management I found the following:-
Quote
Premium Movie Packages with PocketDISH and External Hard Drives
HBO® and Cinemax® are requiring DISH Network to improve the security of their movies to prevent...
Some of my movies automatically delete after they are played. It appears to happen on movies dvr'd on MAX channels. IS this because of Dish's deal with premium channels. I do no remember this happening on the main dvr hard drive. Any guidance would be appreciated. Thanks.
