Exporting dxf file

Hi All

I’m having trouble exporting a dxf file to open in toolpath on a CNC machine. I have sketch up pro. Normally its fine - save as 2D in parallel projection and select dxf as the format etc etc. This time I’m trying to export a 3D image but camera is in top view so appears 2D. Hopefully the image will explain it betterLectern
Toolpath is reading it as a circle - not as a elipse.