Hi Steve,

> There is no re-mapping on export of iges from solidworks, it is
> just a case that in SW Y is up, Z if forward, the output is simply
> xyz co-ordinates, so when imported into MoI then Z is up.

This could be easy to verify if you could export something like a Cone that has a distinct orientation as seen from the Top and Front views.

If you could post an IGES file here output from solidworks, where the cone has a circular profile from the top, and a "pointed up" profile from the front, that would help to clarify this.

- Michael