Hmm... yeah.

Okay, how about this.  Build a new Pelvis mesh, more dense in the center where you'd need the polys to make the gens but have the outside points match exactly to where it would match up to the thighs and hip and set it up as a switchable geometry.  You don't have to worry about the prop not sitting right or falling off.

For filling in the morphs one could build a different, temporary copy of Dawn and use Copy Morphs From to grab the morphs from old Dawn to gen-crotch Dawn.  Where the verts are identical, it should be an indentical copy.  I attempted this with success when fooling with Roxie's disposable lashes on a version with the lashes welded on.

I don't know if anyone feels that is too much work or not but there are many ways to approach a problem.

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