Cannot delete or rename Documents folder on iCloud - Solution

 I am not syncing my Desktop & Documents Folders on iCloud, nevertheless Apple thinks the Documents folder should live forever on my iCloud Drive. I could not rename it, I could not delete it.

 Until some clever user pointed out the solution on Apple forum: If you are not able to delete the Documents folder on iCloud, try to drag it first to the desktop, and then delete it from there.

 It works! Thank you!

Use Blender To Import .FBX And Export .USDZ

 Use Blender to import .FBX 3D files, and export them to .usdz to use in Apple Motion.

 Many 3D models are available in the .FBX Autodesk's format. Unfortunately Apple Motion only accepts .usdz files.

 It's easy to use Blender as a converter:

• In Blender, File, Import, FBX (.fbx)
• The model will load in Blender with its Materials/Textures.
• Then File, Export, Universal Scene Description (.usd*)
• In the filename export, use ".usdz" extension. In the export settings, under Materials, Select "512" in the USDZ Texture Downsampling.
• Export USD.

 The resulting .usdz file imports fine into Motion with its Materials/Textures attached.

 Thanks to this Lightcraft documentation for the tip.