From: Seattle, WA, USA
Yes, that's much clearer, thanks. I take it you're using DVDFab Decrypter to rip? I have used it a couple of times but I don't remember the file types it produces in the folders that you set up.
I was really looking for the reason that the extra blank chapters might have appeared. I just looked at the .ISO from disk 2 using DAEMON Tools and PowerDVD and I found that there are in fact 53 chapters listed, the first 33 of which are blank PowerDVD just zips through the blank chapters showing a blank screen for about 20 seconds. Odd behavior, that.
In the other merge I discussed, a two-sided disk, each .ISO file had its own independent chapter structure. The second side started with title 2 chapter 1 just as I expected. There were none of these blank chapters (the same number as in title 1) to skip over.
Thanks again for taking time to respond. If you see no solution to my problem it's no big deal. The backup still works and is more convenient than the original.
I see the light but where's the end of the tunnel?