City Models problem

Hello there.

I am modding alexander version of RTW, in the LOTR-TW version by wlesmana.
Actually, I am adding some unique settlement plans, along with city models.

I worked out a pretty nice Minas Tirith Model (thanks to redfox for his help in shaping the underlay there), along with pathfindings, collisions, ambient buildings and unique buildings like the citadel and it loads and is playable.

Now i started working on a Minas Morgul model, followed the very same steps and had a starting model to try out. But ingame it si not shown. What is puzzling me is that instead of my model ingame I find some few northern houses with fences around.

I checked everyting and its at the right place, so i made a few more tryes, and here's the even more puzzling result:

1. i put the Minas Morgul model (underlay, walls) in the Minas Tirith settlement plan, and it loads and works perfectly! :beam:

2. i put the minas tirith model (which works in his place) in Minas Morgul settlement plan: again nothing appears in game, just those few houses and fences :inquisitive:

So i am guessing what in the "Minas Morgul place" does not accept my models.. and even more puzzling: why and where the hell the game take those northern houses to place there?
The only thing I can think about is the ground itself: maybe something dealing with the placement in the general map...

Anyone have suggestion?

PS - a few shots of my models:
Minas Tirith ingame:
http://digilander.libero.it/krnell/l...irith%2001.jpg
http://digilander.libero.it/krnell/l...irith%2002.jpg
http://digilander.libero.it/krnell/l...irith%2003.jpg
http://digilander.libero.it/krnell/l...irith%2004.jpg
http://digilander.libero.it/krnell/l...irith%2005.jpg

Helm's deep ingame:
http://digilander.libero.it/krnell/l...0deep%2001.jpg
http://digilander.libero.it/krnell/l...0deep%2002.jpg
http://digilander.libero.it/krnell/l...0deep%2003.jpg
http://digilander.libero.it/krnell/l...0deep%2004.jpg
http://digilander.libero.it/krnell/l...0deep%2005.jpg