Sounds like they're being auto-archived. You can either check out the items
in your archive PST or change archive settings he Right click on the
Calendar folder, choose Properties, AutoArchive tab

"Outlook Newbie" Outlook wrote in message
...
Hi, I notice that Outlook will only show the diary entries for the past
3-4
weeks. The entries earlier than that are not shown (erased?). Is it
possible
to keep all the previous entries & retrieve them for viewing?