Custom morph posing and zeroing out joint bends / also morph asset saves thousands of files

mostlyhuman

I created a custom morph in zbrush and I had spread the legs slightly,  I have the morph applied in Daz Studio and did my ERC Freeze but is there a way to bend the thighs back where they should be but have it zero out the bend sliders back to 0 to make that the new default pose for that morph?

Also, when I went to save my morph as a morph asset, it created a new folder and put thousands of files in there, any idea why or how to prevent that?  Cheers!