sounds like you used import/export - that will break the links between
items. You'll need to relink them. See outlookcode.com or go through each
item and link them manually.
also - make sure the folders are enabled for activities - right click on the
contacts folder and choose properties, check the folders that are enabled on
the Activities tab.

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Diane Poremsky [MVP - Outlook]
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> How does one restore all the activities associated with my contacts that
> was
> in Outlook 2000 and now I'm using 2003?