DXF export circles and arcs

 From:  pressure (PEER)
11910.1 
Trying to save the attached as a DXF with ARC entities for the fillets, but it seems like I'm getting splines instead as in the attached DXF. UseSimpleEntities=y is set. I've tried exporting 3D curves and also 2D projection, but neither gives arcs.

What do I need to do to get ARC entities in DXF output?

- Peer
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