The first is a dynamic item, so once resized there was nothing else to do.
The "La Femme Corsair" needed some adjustments of the Forearm bending zones on the blouse, but everything else was good enough for the pose I used.
The Nun's cowl isn't perfect because it has no collar parts, so it doesn't track poses well.

I found the magnet thumbnails useful for locating magents where little tweaks were required.

I posted some links (in reply to your post in the Poser Technical Forum) that might help with the no buttock dress stuff.
There to a couple of tutorials that explain some basics.