MDD and shape keys


I’m trying to know if it’s possible to load a mdd and modify the mesh animation using shape keys and later bake that mdd again with the corrected mesh. I’m new in Blender so maybe a simple question, but, what’s the way to get that? I load the mdd animation, create a shapekey, and try to sculpt the object directly… I missing any step, I’m afraid. Any help is welcome. Thanks