Don't be afraid to ask for help. I'm making changes to this tutorial all the time. Your feedback is greatly appreciated!
Step 1: Install UE 4.22 with Epic Games Launcher
Step 2: Extract Assets
Step 3: Import to 3D modelling application
Step 3a: Import the base mesh to Blender
Step 3b: Rename everything
Step 3c: Apply the morph targets
This is a good time to save your .blend file!
Ok, I went plan B. Modified umodel.exe
initial version, outdated
04/30 edit:
umodel_morph_fix1.zip
mirror
I am not a programmer, please bear with me for the bad coding. Click spoiler if you are looking for how to edit models without losing MorphTargets.