It's not the IK in the parent character, e.g. V4 or else.

It's the unneccessary IK setting in the boots. Clothings to be conformed never should have IK build in. Poser than is recalculating twice, once via IK-chain and once for each single actor and this is making the different movement.

And sadly there is some old glitch somewhere in the poser engine also recalculating or at least rechecking the positions even if you only put a new material on it. So you get this annoying movements. This is happening heavily since P6/7 and it's only a glitch with the foot/leg IK not with the arm IK ... very strange.

If you use D3D poser editor you should eliminate all IK from the boots or pants or what ever you will conform. This is making no sense there ... ok, as far as don't want to animate a ghostly bodyless clothing in a scottish castle ... :scared: