[Feature Request] Morph Targets not included when exporting Skeletal Mesh from Engine

Comment from David H.: Update on this Jira. I got customers in Cinema field in needs of this feature.

Morph Targets not included when exporting Skeletal Mesh from Engine.

A use case for this would be where users want to add animations to a marketplace asset that has morph targets.

1. Import the attached fbx with "Import Morph Targets" enabled
2. Export the Skeletal Mesh that you just imported
3. Make a new folder and import the new fbx with "Import Morph Targets" enabled

Result: No Morph targets were exported (you can check the exported fbx in Maya and there are no blendshapes)
Expected: Morph Targets export with Skeletal Mesh FBX