Hi Leonard, check what kind of entity is created for the VW-generated sphere, does it really construct a truly curved NURBS sphere or does it make a set of polygons arranged in the general shape of a sphere? I would think it's likely the latter and that is probably the key difference.

Does VectorWorks also import polygon mesh data? If so maybe you should try exporting out from MoI as a polygon mesh object type (like .obj or .3ds formats for example) rather than as NURBS data, maybe that will tame things down.

- Michael