Autolinking fails

Outlook enterprice 07 email auto linking

After looking at the contacts history further, it looks like some contacts
that have been there for years have simply stopped autolinking. The one I am
most familiar with has changed addresses, and all autolinking stopped when
the address was changed.

I have run autolinking, so I don't understand why it does not work. On
other contacts, its works fine.

Bob