Rigid Bodies Exporting

Hello together,

I wanted to export a model to another CAD program and I noticed that the Rigid Bodies didn't arrive in that program. I think only Geometry can be exported. How can I add something at the center of the rigid body that can be seen in any other program, like a little sphere or anything like that? Or ist there a possibilty to transform a rigid into a surface?

Thank you in advance!

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