If you have an issue with using this with motion matching create an animation blueprint, name it ABP_ChildMeshes then go to your character's BP and select the skeletal meshes from chest to feet and add abp_childmeshes then create a variable in the abp_childmeshes and name it SourceMeshComponent with type Source Mesh Component -> Object. Then cast in the event graph of that animation blueprint to your character bp, get the body and set the Source Mesh Component. Compile and play. Should work and worked for me.