I have recently replaced a MICS with a BCM 450 5.0. Anytime i make a DN change it changes line programming (prime set,control set etc) and the internal autodial button programming on extensions that had the origianl DN programmed. I have not experienced this behavior with MICS or BCM 400's or 50's. Is there something new with the 450 or is there some setting that can be changed to prevent this from happening?