Reset Counters ..............
How do I reset my message counter to clear, or zero? - BlackBerryFAQ
Calendar ...
Recognize that if you have multiple email addresses configured, then you have multiple calendars. And, Desktop Manager only sync's the default calendar with outlook. Check this. Your default calendar is set in default services in device options.
Also double check the setting in calendar on the device for how long to keep calendar entries, and double check sync configuration in desktop manager.
If the above doesn't help you, post some details on exactly what you are doing and what you observe happening.
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