Hey SalihBalkan,
Could you provide me with some screenshots and simple steps to reproduce this issue?
Procedural meshes are being generated and created procedurally, which means they do not exist as a prefabricated asset. Therefore exporting it does not make sense to me, but perhaps I am missing an option.
Static Meshes and BSP’s are physical assets that can be replicated elsewhere, where as procedural meshes are generate at runtime and cannot be exported.
Let me know if you have further questions.
Cheers,