Remove archived tasks from Outlook 2007 without deleting the email...

I have a user who is trying to remove tasks from his task pane on Outlook 2007. Most of the emails associated to the tasks are archived. Unfortunately, the only way (that we know of) to remove the tasks from the task pane is to delete the email associated with the task.

Does anyone know of another way to go about this where we can remove the task without deleting the email?

Let me know if you need any more information.

Thanks,