Originally Posted by ZombieBerry
You must wipe the phone, and then re-install the OS
No, no need for such drastic solutions. A wipe should be last resort. For all Vodafone customers concerned BEFORE you change devices on DM, login manually to BIS and change devices there. Put the sim into the new handset, let it connect to the wireless network authenticate the mail accounts and send service books down. Login to BIS BEFORE you move the sim to the new handset.
After the device switch there, now perform normally the DM device switch and everything should be in order.
Any other way mail delivery would stop and BBID would not allow you to connect, even the store becomes unavailable. Fscks up BES activation mail too. All those rather obvious things would most likely get ironed out on new OS releases.