Bodyslide outfit studio vertex bug

[redhat42]

Once again this great tool makes me want to bang my head against a wall.

I've been extensively modifying my body mesh, but lately i've got an issue. After spliting vertexes any bodymorph affecting those vertexes does this.

Spoiler

 

As if splitted vertexes are not painted at all. Weird thing is, i've done it before and everything was fine.

I tried:

repainting bodymorph (is this case, pregbelly)

conforming to an old mesh