Yes I remember reading something about even if the autocad file is 3d, if yiu are in a 2d view during the expiry, it will save the file out in 2d and not 3d but thanks for clarifying it.
I hear what your saying about remodeling target than importing, but I am going to have 37.5 hours to do this project so remodeling an entire building, making materials, lighting, rendering etc will be a challenge :-)
when I sat down with the architect infront of autocad, it certainly looked like he was manipulating a 3d view, but it was all wireframe, not solid geometry, but this coups have been because he was using an old laptop
Cheers for the help fellas
Regards
Will