I wrote a test application that imports Calendar items using PDI and the Exchange Manager, and, FWIW, a new Calendar items with an alarm prior to the next scheduled one will correctly be sounded.
That doesn't help if you need to edit an existing event, but it is an approach for new events. -- For information on using the PalmSource Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
