So I had a look at the logs and it’s working exactly as it’s supposed to.
You’re original WTV file is 13.7GB and 8 hours long. MCEBuddy stripped the commercials from it and reduces it to about 5.5hrs and about 5 GB.
If you scroll to the end of the logs you’ll see the summary as well.
Your issue is Windows Media Center, that’s the culprit which is combining multiple shows into a single recording.
We’ve seen that before and it’s a bug with Windows MC.