The licesee expects to have Anim Interface Implementation from the Child AnimBP override the behavior in Parent AnimBP, even calling link Anim Class Layers in BP to link the ChildAnimBP layers is not working.
Please refer to the attached [Link Removed], open AnimLayer/TestMap and play
Result: The Mannequin is playing the idle animation as defined in the ParentAnimBP.
Expect Result: The Mannequin is playing the walking animation as defined in the ParentAnimBP_Child Simple layer.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-94253 in the post.