help me DVD-9 to DVD-5 "Full Copy" Instructions please

[Freedoom4vn]

After importing assets into Maestro and do setting, I hit a compile button in Maestro. it generated a new set of files:
(file.lay, VIDEO_TS.ifo, VIDEO_TS.bup, VTS_02_0.ifo /VTS_00_0.bup, VTS_02_0.ifo, VTS_02_0.vob and VTS_01_1 --> VTS_01_2, VTS_01_03... )
My question is: there are two ifo files: VIDEO_TS.ifo and VTS_02_0.ifo which one the guiding tells "DO NOT copy over the authored IFO file! DO NOT copy over the VTS_01_0.VOB file!"
-file VIDEO_TS.ifo and VTS_02_0.ifo have their backup files BUPs, so we don't copy their back up over neither, is that right?
Could someone understand the guide help me through this!

thank you

[gow]

first make a buckup copy of your full movie in case you do something
wrong.

Then

1) remove the VTS_01_1.vob
VTS_01_2.vob
VTS_01_03.vob ... (main movie files)

or

VTS_02_1.vob
VTS_02_2.vob
VTS_02_03.vob ... (main movie files)

from the original sub
and copy in their place the files that you have authored
with the maestro (only this no *.ifo or *.bup files).

Then run the ifoupdate and in the first filebox
tell it where to find the dir of your original movie

and in the second filebox tellit where is the dir of your authored
movie

..............