Hi Matadem, what types of objects are you trying to export, is it stuff like spheres and cylinders?

By default those types of surfaces will export out to a STEP file as BSplineSurfaces.

But you can set an option so spheres will be a SPHERICAL_SURFACE in the STEP file.

To do that go to Options > General > "Edit .ini file" button and inside moi,ini find the section labeled [NURBS Export] and set the option in there WriteAnalyticSurfaces=y

I'm not sure if that is what you're looking for.

- Michael