Menu episodes are out of sequence.

[sambat]

I took an episodic disk and modified it so that the titles are in a different order (to match the order they were broadcast).
Adjusted the menu and underlying subpics so that the menu functioned correctly when a selection is made on playback.
One teensy problem is that when an episode is finished and returns to the selection menu, I would expect that the next title in the list would be highlighted.
1>2>3 etc.
Instead I get 1>2>2 or 4 finishes and 12 is highlighted instead of 5.
Using PgcEdit it says that a register(?) sprm8 holds the value of the highlighted button.
My problem is I can't figure how it gets the value initially and how it gets incremented.
The DVD commands fill 32 pages in Office, so right now I'm stumped.
Any hints?

[usually_quiet]

Open pgcedit and open the DVD. Click "Info" in the menu bar then click "SPRM" in the drop-down menu to open a window titled "SPRM Usage Count and Finder". Click on the number to the right of "Highlighted button number" to bring up a window with a list of all the places where SPRM 8 is referenced. You should be able to find the places where the value of SPRM 8 is changed.

[sambat]

Thank you, but I had to give up;it was too confusing.
I resolved it by using AVStoDVD to load up the required episodes in the correct order, creating a menu with my own graphic from the original and letting it author the disk without encoding.
Twelve episodes per disk are processed very fast and it actually takes longer to burn the DL disk than the authoring.
This is the Mill Creek issue of the old Robin Hood series from the 50's.
I assume the episodes are out of sequence because they wanted to fit the varying sizes in without further degradation of the source.