Hi guys I really need your help with this!

I’m animating a cat in Motionbuilder and I’ve set it up with a character extension so that the tail and facial joints are part of the character. I can save and import my animation as well as created poses.
The problem I have is when I bring my clips into the story window the cat animates fine but the joints in the character extension do not.
I’ve done the tutorial where you attach the servo to Mia and it works ok, the extension animates in story.
When I try the same tutorial but using my own joints instead of the servo I get the problem of the extension not animating in Story.

Here’s what Im doing: (Attached is a zip file with the 5 files...)

In Maya create a chain of joints, save the Maya file (joints_extension.ma), and Export All (joints_extension.fbx)

Open up mia_rigged.fbx, merge in joints_extension.fbx and move the joints to the shoulder and parent to the shoulder.

In Navigator right click on Mia character and select Create Character Extension.

Select all the joints that I merged in and drag onto the character extension.

Drag the shoulder into the Reference Object of the extension.

Save the scene as mia_extension.fbx

Create some simple animation and save as mia_anim.fbx

Open up mia_extension.fbx

In the Story window right click and Insert> Character Animation Track

Select the character as Mia and right click in the clip area, click Insert Animation File… and select mia_anim.fbx

Mia animates but the extension does not. (mia_story.fbx)

Any idea what I’m doing wrong?

	Attachment
mia_extension.zip

Your files work fine for me.
Do you have your ‘Character Extensions’ box ticked on the Character Track?