I wonder if it was an edit from the network or if the tape they have either doesn't have those matches or doesn't have them in acceptable quality. I forgot what event it was, but I know one of the WCW PPV's has a graphic on the screen about how certain parts of it are un-watchable due to the master tape quality.
I believe the PPV you are talking about is Great American Bash 1989. Thankfully, that is more complete than the commercial tape though. I found it strange about Clash VI, because the copy I had in the tape trading days was complete. The quality on the Network shown portion was flawless, especially compared to Clash V. Something is up for them to cut out the NWA Tag Title change. I can understand the other two maybe not being as important in their eyes.
I've had the commercial tape for Bash '89 since I was a kid, and haven't gotten around to watching it on the Network yet. What are the main differences?