Trying To Export Curves for Tool Path

I'm trying to export curves that are projected onto a curved surface to serve as a tool path for a vendor using MasterCam. For the life of me I CANNOT get SW to output just the curves no matter how many toggles I'm switching in the export options. I've tried Step, IGS, and parasolid with no luck, they all just come up empty.

SolidworksImport export