morph merger

Hi everyone, I am pretty new to this and have been experimenting making realistic and varied feet. I'd like to make a morph package with various sliders for others to use, as well as make looks and textures that people can download, but I have no idea how to make a custom or new morph. I can't...

I have a customized model I created with morph merger from an old model I created. I'm now after the old model however I have since deleted the old model (long story, cant be recovered). Is there a way to undo/reverse the changes to the newer model to get the old model back using the new morph...