I am trying to do my regular DM sync and the sync wants to delete over 200 calendar entries on my desktop from within the past few months. I don't understand as all these entries are currently both on my device and my computer. I like to keep my old appointments and do not do this. The only way I can prevent this prompt is to do a one way sync from my device to my computer. I think things have changed since downloading 4.5 OS as there are several different calendars listed now on my device. It is trying to delete all appointments from a certain calendar but not the other one. I don't know why it seperates calendars as it is not necessary. Anyone following me here and can offer advice would be appreciated.

I use Google Sync, I know that it deletes all of the entries and rewrites them.

Thanks for the reply. I use Microsoft Outlook and it's important that I stick with this one. I have done some reading and it appears that with OS 4.5 that it creates a calendar for each e-mail address that the user has. I have a folder for default calendar, one for Cogeco and one for my Rogers blackberry address. If my Blackberry is set to "show all calendars" then I can see everything in one, but if I pick an individual calendar I can only see bits and pieces. Therefore it would make sense to leave it on "see all calendars" but when I try to sync it to DM it wants to delete the calendar with over 200 entries and keep the one with 6 on it. Is there a way to sync everything?

did you ever figure out if there is a way to sync everything? i too recently upgraded to 4.5 and have found the same issues. please post any solutions you found...thanks.