FBXImportUpAxis [y|z];
FBXImportUpAxis -q;
This command is the script version of the option in the but is not available in the plug-in UI. See Axis conversion.
Note The FBXImportUpAxis command adds pre-rotations to your scene objects to orient them from one product's world axis to the
other. If this is not what you want, experiment with the
FBXImportForcedFileAxis, but read the description of the FBXImportForcedFileAxis command as it changes the interpretation of the incoming data.
