I have a problem of saving IGES. I have an IGES file which contains entity 106 curves which are non-rational b-spline. When I open it using OCC and save it back to IGES file, it becomes IGES 126 entity. It exports all weights of control points to the new IGES file. My question is it possible to save non-rational curves to IGES 106? I can't find those configuration options.
Thanks in advance.