Save as iges ??

I have a part with 2 revolute feature without merge, so if igo inFile>SaveAs>Iges i have a file with 2 entities. If i dothesame operation via code using SaveAs4 i will have an igesfilewhere the 2 revolute feature (without merge) are visualized asoneentities. How can i obtain the iges file with 2 entitiesviacode???SolidworksApi macros