Virtual Bone Not Snapping to Target Bone In Lyra? Any Reason?

The virtual bone on lyra default skeleton VB IK_Hand_L_weaponSpace, seems connect from weapon_r to hand_l. But in runtime, the virtual bone and hand_l lies definitely not at the same position.
I disabled all hand IK nodes and draw debug location of both bones. They almost never snap with each other.


Any reason with this? Thanks for any idea.
Debug draw nodes:

All hand IK nodes are disconnected to remove potential influences:

I have found the reason for this. That’s simply because of the retargeting option. Animation option fixes this.

Animation option ? What

Set the retarget option to [Animation]