I lost the store morph target on Genesis while making a morph, But then I realized if I load a default genesis, click save store MT and import the obj with a morph on one side, it still remembers the Store MT data from the original:) This means I can mask and restore and transfer morphs by smart resym. I take it you want the workflow lol..I was rambling about my original post which I deleted. The workflow is as follows
open mesh
store morph target
make morph on one side
mask that side
export
to make a flip morph
click smart resym
now mask other half
go to morph target and adjust dial till original state is on the other side
Export.