Hi
This might be a silly question, but I have noticed that some times after I have put
conforming clothes and hair on a model (non specific) and maybe even add a prop
What happens is if I move the prop or adjust for example eye movements, the clothes moves
with it and then snaps back into place ones I stop moving the object.

So the morph and placement is not really affected it just looks weird and anoying that it move
with somthing not related to it.

Hope this was clear, and if there is anyone else seen this ?

( Poser 7 by the way )

This is common in all versions, and it is disconcerting until
you get used to it! 
Poser does a lot of calculation to keep clothing in line with
the model, and sometimes the calculation takes long enough
for your eyes to notice.