Answer by Plastic Ant

Hi, we've written a 3ds Max plugin for exporting the PhysX information into the exported FBX file. You can then access that information in AssetImporter, the whole process becomes fully automated. It also means the artists can test their physics in Max before the coders get the data. No need for proxies, special names or additional data. You can find it on this thread: http://forum.unity3d.com/threads/fbx-physx-exporter.258375/ Thanks.