Exporting a character from CC4 as FBX and then reimporting into CC4 causes iClone eye-tracking to break
CC version 4.4.2509.1 iClone version 8.4.2505.1
(Note: This problem was not present in earlier versions of CC/iClone)
To reproduce:
Export a character from CC to FBX via the file menu (use blender preset, mesh only). Immediately re-import the FBX back into CC as "CC Avatar". Save character to the Asset Browser.
Bring character into iClone via Asset Browser. Set character's "Look at" to a target like a sphere or something. Character's eye-tracking does not work. Head may or may not track object but eyes do not follow target object.