InterOp:Graphical/XCGM Import Overview
From DocR23
To work with XCGM as a source file in 3D InterOp CGM, you must work from an imported Product Structure before importing the XCGM file.
Working with XCGM Files
When you are working with XCGM source files, you will need to import the file from within the context of an imported Product Structure. These tutorials will take you through the process of importing an XCGM source file.