Integration with Other Applications > Windchill Workgroup Manager Documentation > CATIA V5 > User > Advanced Techniques for CATIA V5 > CGR File Management for Large Assemblies > Using Part CGR Files
  
Using Part CGR Files
Following are considerations for performing actions on CGR files:
Open within CATIA V5CATIA V5 only allows the direct use of CGR files in the context of an assembly. CGRs themselves cannot be opened individually.
Save within CATIA V5—You cannot directly save CGR files. They can only be created or modified by performing a Save As operation on a CATPart with the CGR output option selected.
Add to Workspace—CGR CAD documents can be individually added to a workspace from the commonspace. CGRs have no external references, so only the associated WTPart, if present, can be gathered via the Add to Workspace window.
Open in CATIA V5 and Open from Windchill—This functionality is disabled for CGR files. The Open in CATIA V5 action is hidden for CGR items in the Windchill Workgroup Manager, and CGR files do not appear in the Open from Windchill window.
Rename—If you rename a CGR file in Windchill, the next time you attempt to open an assembly containing the CGR, the links to the CGR files are updated by the managed session of CATIA V5.
If an assembly containing the CGR is in session when the rename occurs, you are prompted to close and re-open the assembly so the link can be updated.
Save As—If a save as or a rename is performed on assemblies containing CGR files, the links to the CGR files are updated by the managed session of CATIA V5.
Edit Attributes—Since CGR files do not contain metadata, editing the attributes of a CGR in Windchill only affects the EPM document.
Auto Associate Parts—This behavior is the same for CGR files as it is for CATParts. The document created for a CGR file can be associated to an existing WTPart, or a WTPart can be automatically generated during the checkin process.