Custom body mesh metahuman livelink error

Development Character & Animation
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1

Hello there. I have added a new body mesh to metahuman I imported it in UE and using control rig, everything works well. However when I am using livelink, the new body mesh fails to follow the face and it creates gaps between neck and the body. Same like in this tutorial: https://youtu.be/YNsNtpsCT4k?t=108

You can see the body doesn’t follow the head in livelink so there are gaps in the neck.

I didn’t change any name or hierarchy in the skeleton, so it’s all ue5 compatible. I think I only have to change my new skeletal mesh that I imported in Animations Blueprints settings, but can’t find any solution for now.

Does anyone know any solution to this?

Thanks in advance!

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Here you can see that when changing the skeletal mesh to custom, it’s breaking the blending between head and the body even that the both skeletal meshes are using the same skeleton with identical hierarchy and names.