I agree that redoing the mapping on the low-poly mesh with your existing version as a guide will probably be quicker and easier than patching the high-poly version directly. Also, any modeling program that can do sub-d should be able to reproduce the high-poly version from the low-poly one. The vertex numbering will be different, so you can't quite test it with the existing morphs, but I can fix that later.

There's one caveat though (that I can think of): the low-poly version for Poser has the hard edges removed. You need to use a version with the hard edges still in it to get the correct sub-d shape. So I'll upload that to the developers site tonight.

-- I'm not mad at you, just Westphalian.