Just took a peek at the new Metahumans:
^ from UEFN 5.4
Check my reply in the other thread. In the new 3.0 MetaHumans they added a Metahuman actor component which allows you to change “corrective” animation playback.
This component is currently being held hostage in UEFN (UE 5.4). It’s not in 5.4 preview. Bridge will not let you import 3.0 Metahumans into UE 5.4 preview.