Tools so far: Tivo Premiere->Tivo Desktop->Video ReDo TVSuite v18.104.22.1682. I have avoided the Tivo Desktop "fast transfer". I get a message saying "Video program stream not found" when I try to open the file in TVSuite. I don't have any problems with standard Tivo MPEG-2 files. This is the first time I wanted to edit Tivo files that were in the Verizon H.264 format (Emma 4-part mini-series). They still play fine on the Premiere.
I finally found/figured out what I was doing wrong for Verizon H.264 files. For Tivo Desktop, in Preferences, Under File Transfer Speed, "Use the fastest ..." must be checked to retrieve programs that are H.264 encoded. When I did this, the file format was compatible with Video Redo. Maybe this will help someone in the future who runs into the same issue.