No way... you can only export as OBJ or other file format.. all texture will be converted to BUT HF use some features like "instances" in Carrara that need to be converted to real objects before export... so you will end with a very very high density mesh.
By the way, you cna open Poser stuff in Carrara, and it is more faster to render them Poser... so its more easy to port your PZ3 or CR2 files to Carrara them the reverse.

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