Gave up on Backup4All. That software would drop some files. It did NOT support DL disks.
So I tried Genie-Soft.
But Genie-Soft splits the files randomly. I think it is when a DVD is at the end, it splits the current file and starts writing part of it to the next DVD. Doesn't seem related to size unless 200MBs is too large for Genie-soft which I doubt. Posted a question to support and they haven't gotten back to me in 3 days. In fact, posted multiple times and each time they answer a different question than what I asked. Not too promising.
The tool seems close but I can't use it if it randomly splits files.
Tried Archive Creator also. That seems outstanding. SPANs dvds, and does burning in parallel. Their software crashes sometimes
So just can't find a perfect solution.
Lets see if Genie-Soft ever gets back to me.