Construction materials missing

[EC_Alv]

Hi,
I am experiencing some errors in ModelIT. I seem to have lost the construction material assigned to my geometry.
Geometry is apparently OK, no error detected via Model Report Check.

Checking the model settings i realized that the construction materials are missing.

I have then tried to substitute the .dfa with no improvement.
Any idea why this is happening and how i can sort it out?

If i create a new room within the existing (corrupted?) file the materials are assigned to it only.
See image at this link: https://drive.google.com/open?id=0B01KX ... 055eGc3UjA

Enrico