Addressing in WORD Envelopes

I've been using Envelops and Labels in WORD (2000) for some time. I used the
pulldown in Envelopes to select the address from my Outlook Contacts.
Recently one of my contacts moved. I updated their address in Contacts but
cannot seem to find a way for the new addess to be available in WORD
Envelopes.
I tried deleteing the person from the pulldown but it won't go away. I tried
blanking out the address after inserting from the pulldown, then pasting in
the new address. That works for that time only but the pulldown still has
the old address next time.
Any suggestions?
Could it be some problem with the Address Book versus Contacts? I have been
using Contacts for years since it first became available.