Hi sneather and Michael G.

We use NX 8.0 and MoI here at work. We also have a software called 3D Tool. What I usually do is export a Parasolid from NX, convert it to SAT using 3D Tool, then bring it into MoI.

What you could do is have your client send you a Parasolid instead of a STEP file. You can download and install "CAD Exchanger" software and convert the Parasolid to SAT. I say this because the 3D Tool software runs about $900 USD.

This has worked pretty clean for us, but their are always exceptions.

You can also use the "CAD Exchanger" software to send Parasolids back to your client. My experience is that Parasolids back into NX seem to work better than STEP files.

Michael T.