Forgot to mention that many things have been moving around lately. It is possible the channels you are missing have just moved. Maybe do a full blind scan of 97w to update your list.
Yep, do a blind scan, and you should have them back. Off the top of my head I don't remember where they moved, but I know they stopped using that transponder.
I did a re-scan of Galaxy 19 about a week ago. The duplicate channels have been removed now so, as FTA4PA says, all should blind scan to clean up your listing.