I have tried using the .fbx format but all the visibility keyframes and growth keyframes get lost upon import to blender. I know you can import the visibility keyframes through the fbx to use in 3DS Max; is it possible to get this to work with blender as well?
Can we can some insight from Bentley as to what format, schema, syntax, etc their implementation of FBX uses? Autodesk's Official FBX Converter tool was last updated in 2013 and seems to be completely incompatible with the FBX Synchro created.
Gary - is there an fbx that can be properly opened in Blender? One that is exported from other products that is not Pro or 4D Pro? We can then compare the fbx export from Pro VS the "correct" fbx with animation that can be opened in Blender. We've seen only a few requests before, but no user has provided an fbx that works with Blender.
Jacqueline, since FBX is a proprietary closed source file format by Autodesk and Blender is a purely open source project, proper support using the official Autodesk FBX SDK (as I believe you use) will never happen. Instead some dedicated contributor has reverse engineered the file format a few years ago and they have a mostly working implementation. I was able to import this FBX file and see the animation working fine in Blender:https://sketchfab.com/3d-models/gold-sandworm-41f03702289940b29831dcb771fb5f3a(The textures didn't import, but that's not as important to me) According to a program I use to inspect FBXs this is FBXv7.5