Here i removed the touching poly's from the right and left thights and added them to the hip group. then welded. Then hip group has to go down as long as your dress is, front and back.

Do not mix up with Dynamic clothing that have no groups.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!