If I need to remove a bone or what not that will alter the position of another bone, I write down the positions ( I use the set up room though so not sure if this is feesable for you) and then input the #'s back in ( the end points #'s) to get the bone back into position. But generally I keep one bone past what I will need.

♠Ω Poser eZine Ω♠
♠Ω Poser Free Stuff Ω♠
♠Ω My Homepage Ω♠

www.3rddimensiongraphics.net