Hi Pilou - SAT is a NURBS format, when you save an SAT out from MoI the SAT file will contain NURBS data, when Simlab reads it in, it will read the NURBS data and then it will convert it to polygons during that import process.

The reason why you would want to use OBJ format instead is that then you would be generating the polygons out from MoI and be able to use MoI's controls for adjusting it.

- Michael