Copy Bone

Use Copy Bone to sample one transform and bake its motion onto another transform for a queue of clips. Use it to move animation from a helper bone to a runtime bone, generate a weapon track, or correct a hierarchy mismatch. Open , then select Animation > Copy Bone.

Inputs

Field	Purpose
Clip queue	Accepts `.anim` clips and FBX assets. An FBX adds every visible, non-preview clip it contains.
Character Model	Root used to sample the hierarchy and build the target bone path.
Copy From	Transform whose world pose is sampled.
Copy To	Transform that receives local position and quaternion rotation curves. It must have a parent and belong below Character Model.
Rotation Offset	Euler rotation applied while converting the sampled pose.
Is Additive	Copies motion relative to a reference pose.
Reference Animation	Required for additive mode. Frame zero supplies the reference pose.

Process clips

Queue the source clips

Drag .anim clips or FBX assets into the drop area. Expand Queued Clips to review the entries.

Map the transforms

Assign Character Model, Copy From, and Copy To from the same representative hierarchy.

Choose the conversion

Set Rotation Offset when the transforms use different axes. Enable additive mode only when the copied motion must be relative.

Bake the queue

Click Process Queue. Review each Processed or Skipped result.

Copy Bone modifies queued animation data. It writes curves into .anim clips. For FBX clips, it writes through the ModelImporter and reimports the FBX. Duplicate or version-control source assets first.

The target receives localPosition and localRotation curves at the clip’s frame rate. Clips without a valid rate use 30 samples per second.

Unreal Engine

Unity

Copy Bone

Copy Bone

Inputs

Process clips

​Copy Bone

​Inputs

​Process clips

Copy Bone

Inputs

Process clips