I just went through my whole line up and found:
channel 81 is called RTTV
channel 327 is missing and it's called GRIT
I had a few other issues like:
channel 3 KWPXDT which should be "KWPX (ION)" or at least "KWPX"
channel 103 is also KWPXDT but really it's "KWPX HD (ION)"
So this was causing MythTV to record ch.3 & ch.103 but causing a conflict so it really only recorded ch.3
This made me edit my line up to drop and SD channels and found the other two mistakes.
I know you guys get the data and just pass it on in a format I can use, but is there anyway to correct the mistakes before or after for instance I can't even select 327