I may not be using the proper terminology. I have tried exporting out as IGS SAT and used the converter 3dmcurves2dxf.
I tried importing them into turbocad 8 pro and doublecad (same software really) they export out and import fine but the information isn't retained that says it is a circle or an arc so when I try do do any dimension work it doesn't recognize the line as an arc or a circle. It just understands it as a polyline (spline) So I have to redraw all arcs and circles to be able to get any measurements. I have been poking around it the import setting but on the whole import settings are minimal.

I have been pampered by MOI as it is so easy to draw things up I hate to use other programs now.

Make sense?

thanks

Val