Exporting Sheet to dxf in one polyline

Hello!

I'm here because I have the need to metal sheet to dxf format, I can do it without problems, but the issue is that I need the resulting file to be a single closed polyline, because the cutting machine requires it that way.

I tried configuring the options when exporting and I had no solution, I tried to also look for a Macro that has this functionality and I was not lucky either.

   Those are the options with which I tried

Does anyone know any method to achieve what I need?

Or know a macro that has the ability to do it?

Many thanks!

SolidworksSheet Metal