Swapping out VOB files

[ADigitalMan]

I have authored a disc using TMPGEnc DVD Author that contains individual VTS VOBs under one titleset. I am simply compiling a collection of VTS files from various sources onto a single disc. The first titleset originally had three audio tracks, but TMPGEnc strips out the additional audio tracks. In order to re-insert the "multiple audio" titleset, I attempted to replace the "output" version of this VTS_01_1.VOB with the "source" version. It almost worked, but not quite.

Can somebody please help me understand which values I'd need to edit using IfoEdit (or whatever tool) to have the "source" VOB work in place of the "output" VOB for this one titleset? Thank you.

[mats.hogberg]

I'd author with an authoring app that supports multiple audio tracks to begin with...

/Mats