Help with backuping DVD with LPCM audio while maintaining structure

[soujir0u]

Hi, I want to backup a DVD-9 with LPCM audio (it only has one audio track). How can I do it while still maintaining the menus?

The structure of the DVD is as follows:

VIDEO_TS.BUP
VIDEO_TS.IFO
VTS_01_O.BUP
VTS_01_0.IFO
VTS_01_0.VOB (MENU)
VTS_01_1.VOB (START MOVIE)
VTS_01_2.VOB
VTS_01_3.VOB
VTS_01_4.VOB
VTS_01_5.VOB
VTS_01_6.VOB
VTS_01_7.VOB
VTS_01_8.VOB (END MOVIE)

I have encoded VTS_01_1.VOB to VTS_01_8.VOB (as a single d2v file) with CCE and encoded the audio to AC3. I then use IFOEdit->DVD Authoring->Author New DVD, and mux the encoded M2V and AC3 to VOB files.

What should I do next?

Thanks in advance.