Referencing an ACAD 2018 C3D file into Microstation V8i SS3

Hello, I’m trying to reference a C3D 2018 dwg into Microstation V8i SS3 Ver. 08.11.09.459 and it says its an unrecognized file format.  I’ve done it with other acad files.  Any suggestions?
 
Thank you,
John

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