Mesh Morpher's Poser is one of the most powerful tools in Mesh Morpher.
It allows to bake skeleton, mesh, create Morph Targets from Poses and also has the ability to create corrective Morph Targets.
In this post and video we're using the Poser to fix the blink corrective Morph Target for a custom Meta Human using only Mesh Morpher's Poser. We don't require Maya or any external software for this.
Here is a video explaining the process from the beginning to the end.