[Bodyslide Help] Armor Elbow doesn't bend along with cbbe body

[Charles600]

I tweak an armor in bodyslide because the breast part is just too big, so I set the preset to Athletic/Slim then hit the Build button.

this was Before the bodyslide.

 

https://imgur.com/MHparVc

 

everything is fine, the elbow part bends along with the cbbe body.

 

and this is After the bodyslide.

https://imgur.com/z8JzSCJ

 

now the elbow part of the armor doesn't bend along with the cbbe body.

 

 

How do I fix this? thanks in advance!