Trying to make an outfit with SMP bones Bodyslide compatible with Outfit Studio

[donnerwetter]

So I came across the Haku Wedding Dress, a rather nice outfit in it's own right, but what really made me want to try it out was this SMP-fied version. As lovely as the dress is, outfits like these tend not to look too good in most poses without skirt physics. Sadly, the SMP version was not Bodyslide-able, but since there were a few CBBE conversions of the outfit out there, I figured transplanting the SMP bones onto a CosioHD conversion wouldn't prove too difficult.

 

My initial attempt was first converting the CBBE version to CosioHD, and then importing the SMP version and copying the relevant bone weights onto the relevant meshes. This looked good in Outfit Studio and Bodyslide, but would result in the skirt and bows glitching everywhere in-game. I then tried converting the original UNP SMP-weighted meshes to CosioHD, which took longer and almost worked. However, a part of the skirt along with my character's thighs (weird, since the body mesh doesn't have any SMP weighting) fall through the floor in-game.

 

I tried updating my SMP setup, but to no avail. I'm no expert on SMP but I've managed to convert other outfits with SMP bones, and I have no clue why this outfit isn't playing nice. I can upload my project files if someone wants to look at them.