Problem resolved with Dish Chat. Took over 2 hours, way too long, kept coming back to the same issue your equipment must be upgraded to the latest to receive all the channels. Even had some hilarious responses like -USA Network isn't in HD and that I never had it in HD - and - system won't let me give you HD because your 311 is not an HD receiver- never mind my 2 VIP 612 DVRs that I had with HD for years. For now I am back to the channels I had before I did the downgrade, but doing some research on DISHCHANNELCHART.COM I see HD channels listed on 110 & 119 satellites that I am not receiving. Once I gather all the info I will raise the issue with Dish.
Make sure they are conus HD channels you are seeing listed but missing and not spot beam HD channels that only Alaska or Hawaii can see.