I'm having to let my Twin Dial Emergency go at the moment

(it's on these here FS forums )
Failing this site it will be heading toward the dreaded Ebay...
Despite which method I eventually get a sale on, does anybody know the correct procedure for transferring ownership of an Emergency watch to another person?
These are registered to an owner to trace back improper use of the transmitter and I would like to make sure that the new owners details are held by Breitling
Many thanks for any help received.
Tony