I had a blackberry without the enterprise server. Then I switched to a Treo and found that when I get my calendar wireless from my company server, outlook only allows calendar dates going forward and about 2 weeks back. Then, events automatically come off my Treo. Now, I want to go back to a blackberry but this time through an enterprise system. Will outlook allow a full calendar to remain on the blackberry or will I still lose appointments after a period of time?
Thank you.

Someone else might know better but there is an option to keep appointments forever. After that I assume the only restriction would be what schedule the calendar in Outlook is set to archive at.