MorphTargets/BlendShapes are read from the scene, not the morpher modifier. This also results in blendshapes names being equal to morph target object name (objects), rather then names from morpher modifier.
Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 4827620
Only one morph target
All of the morph targets from the morpher modifiers list would be there
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-69400 in the post.