Navigation problem with BIG 3

[DaRtHmAuL]

Hi all,
i got a problem with all my backups. I can't navigate through the time navigation bar (in powerdvd) like the original DVD.
I only can navigate by chapters which works perfectly but not minutes by minutes for example... it switch directly to nearest chapter.
Is there a way to fix this annoying prob plz.
thks
cya

[DaRtHmAuL]

I just saw a technique by transfering the VTS_TMAPTI table in IFOUpdate. The Powerdvd navigation slider works perfectly (but i've readed in the IFOUpdate 0.77 readme.txt that the options can cause problems on some dvd players...
before burning my backup, i would like to know if its not too risky.
thks for help
cya