I did a few little updates to my fbx importing script for anyone interested:
There is now an option to build a setup that can be used to recomp work done in the fbx action over the original plate.
There is also another option if you have st maps with a fbx camera. It can now build a undistort/redistort setup and import the st maps. The st maps have to be in the same folder or sub-folder of where the fbx is. The st maps also have to have ‘undistort’ and ‘redistort’ in the file names.