@deank It's a surprise for me too that it works with the original clpi and mpls, but that's the only way to keep the pop-up menu on this discs.
As I said, he should have had problems with chapters, IN-END Time, but not with the pop-up in this style.
Yeah, multiavchd is very useful, but it does not keep the menu. Maybe deank will do a miracle and puts together a remuxer for IGS components.
Or you can leave it w/o menu, and zapp through chapters directly from your player's remote control.