"Mailing Address" not showing in Views or Mail Merges (OL 2003)

[DBakerMan]

I have a client who makes pretty extensive use of the "Mailing Address"
checkbox feature. When her assistant copies the data from her Contacts list,
the entries come over fine including the checkbox for the appropriate Mailing
Address.

However, when viewing the contacts as a table with the "Mailing Address"
field, nothing shows up. The ony way to get the Mailing Address field to
display is to go into the contact, Un-check the "This is the Mailing Address"
box, Check it again and then save the contact. This problem also effects the
Mail Merge function as the Merge does not see the "Mailing Address" entry.
The list has over 800 entries, so performing the un-check/check procedure on
all of them is not a solution.

Any ideas?