Currently nodes that use FBoneReference properties (slope warping, anim dynamics, modify bone, and a load of skeletal control nodes) can't have the bone they target changed when using template anim bps (ie. the target bone needs to be specified via text in the template). Having some way in which the child could specify these bone references would help to make templates much more flexible since the bone names of the skeletons would no longer need to match.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-160697 in the post.