OSX 10.8.4 here running on a Macpro with Illustrator CS6 (v16.0.4)

Copy/paste .PDF to Illustrator is working perfectly, colors are preserved

Copy/paste .AI is working in the MoI 3D side (selecting the view and fit to page or not) but doesn't fill the clipboard in AI (paste is greyed out in AI)

Copy/paste from AI to MoI 3D is working but lines are exported as two lines (for example a 1pt width line is 2 lines in moi with a small gap between them like if it was treated as a surface in AI)

But that's already a huuuuuuge step forward, huge time saver !

Thanks for everything :)

We'll train another person here and buy him a license soon !