Have a closer look at the dof and ai_NavDat. It all contains things like doors and so on.
Messed part that i have seen plenty of versions for this dungeons, also fire version and the other 2 tombs.
X n z in sro are 255x128 since regions contain a bitmask for weather it's a dungeon or not.
Everything above 128 in z ordinate more less is aligned as dungeon. I eieplly express myself very wrong but hope you get the sence of it. Was just a quick review and quick post here
Also to align the minimap can bring lots of headache without using external tools to illustrate what you or we working on.
Hope it's a little step forward for you.
Doors are flagged within event Zones. So they also need to exist in database to make em work.
If you should start pull hair or even hairs.. Let me know. I can give some more hints
