Ok I have two large and complex ages built in Blender Enobmort and Noidrocca and I have been looking at getting them into 3dMax.
Using the export facility in Blender and Exporting as 3ds I can import simple models into versions 7 and 8 of 3dMax.
The master cube of Enobmort consists of 125 sub cubes and this will port
It handles multiple layers and ports in regions. Bigger chunks are a no go.
I am continuing the experiment but at this time it looks like those ages will remain in Blender I may have to transfer using multiple moves.