I improved the export script to convert all volumetric and shaped objects. Wasn't happy with the results some time ago when I was working on something in FreeCAD, so I gave it another try. One thing that definitely needs improvement is that I can check the objects' visibility. This is not available within FreeCAD's headless mode, because people might have thought: "Why caring about visibility, if you have no UI and can't see anything anyways."
Well, good point, but stupid if I would like to convert all visible objects (because theoretically you could have made some invisible because something is temporarily not needed) into mesh(es).
Anyway, I could deliver a new package for this, but I think it won't be a big deal for you to replace the following FreeCAD macro:
https://git.thopiekar.eu/Cura/CAD/CuraFreeCADPlugin/-/blob/master-improving-macro-to-export-volumetric-and-shaped-objects/CuraFreeCADPlugin/macro/conversion.py
Good luck and if you need any kind of help, let me know!
Looking forward for your feedback ๐