replacing video parts vob

Hello,

I shot some videos for a client that need to be replaced with the old videos on their DVD.
They only have the original DVD in pal and 1 in NTSC.


This is dvd structure:


There are about 8 different languages on the dvd.

I copied the VOB 3_3 file, replaced the new videos on top of the old and export it back to a vob, and replaced with the old. That obviously didnt do it. the new file was all shorter in minutes.

I have dvdremake on my computer(if this helps here is a screen shot)this is one of the program chains:
The movies are on PGC 18, 19 & 20
As you see they are apparently separate files.

Attachment 20143

I don't really know anything about this kind of stuff. But i am guessing its gonna be hard.

Any help is appreciated to help me fix this.

Thanks in advance.

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