Hi Andras - one thing I forgot to mention though is that styles will not transfer through SAT right now. It may be possible for me to add to some extent, not quite sure yet.

If you want to have style information preserved and come into AutoCAD as layers, possibly that Sycode 3DM import plugin for AutoCAD may handle that currently for curves though.

But you should be able to transfer you geometry back and forth with SAT at least.

- Michael