Strange when Export to STEP

I import a STEP file to my CAD system, and simplified it. Then I export it to a STEP file. When I open this STEP file(simplified) in other CAD(Pro/e), the part is not the same as in OCC. Attach file is BREP file. Who can tell me why!!!

Attachments: 
lqw1001's picture

The problem has been solved.

P Dolbey's picture

Just for the benefit of others, its nice if you say how it was solved.
Pete

lqw1001's picture

Just add this line:
Interface_Static::SetIVal("write.surfacecurve.mode", 0);