We keep cross-posting. :)

Yes, it does work. I did a really quick and dirty and it did work, although I should have selected a different donor .cr2 file because the joint parameters are slightly off. A part of the sleeve stayed in place when I moved M2 around. (That's my fault, not the program. Unless you say it messed up because it listened to me.) ;-)

The hardest part will be aligning the sleeves. (I'd post my quick conversion but I don't have time to properly align the sleeves right now.) The shoulder area is different so the sleeves are tricky. Very small amounts of Rotate on the Z axis going down the sleeve should do it. (I.e. select the entire sleeve, do a tiny rotate, deselect the sleeve. Select most of the sleeve, do another tiny rotate, deselect again. It keeps the sleeve more even than one obvious rotate at one juncture.)

One thing that I've found is sometimes when you conform the clothing in Poser, it does shift slightly. I'd suggest not going onto a different clothing item until you're sure you're happy with the current one. I've had a few cases where I had to go back and do a little more tweaking, and it's much easier to do if the project is still open.

Cheers!