AutoComplete addressing resets every time I retsrat Outlook. Why?

I love the AutoComplete addressing feature in Outlook but it has changed
since I changed to Outlook 2003. Previously (Outlook XP?) the cache would be
accessed all the time but now everyime I restart Outlook, AutoComplete
addressing cannot access previous entries. Why?

In other words I send a message to Joe.bloggs@ whatever and thereafter if I
just type in 'joe' it displays the full email address for me to simply click
on. Great. However this only lasts as long as my Outlook session: if I
restart Outlook I lose Joe and everyone from the list. This did not happen
with previous versions: joe would be stored somewhere and saved, so
AutoComplete addressing would work for Joe forever. How can I ensure the
file or cache where this is stored does not get reset and cleared everytime i
restart Oulook?

Mark.
.

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