Synchronization of Calendar - Not all items synching

[ckufta2]

I am using a Curve 8330 and Desktop Manager 4.5.0.127

I have been having no problems for the past few years.

Suddenly, I noticed when I synched recently (2 way between Outlook at my calendar on my BB), the device wanted to delete 10 or so items from my desktop calendar. I rejected the changes.

I have my settings on the blackberry set to keep calendar items forever.

Now, the system reads about 2551 items on my computer, but only 2540 on my computer and every time I do a two way synch, it wants to delete the 11 items on the computer as they do not seem to be found in the device (I never deleted anything from the device that I know of).

When I do a one way synch from the computer to the device and force it to delete all items on device before the synch, the process reads 2551 items on the computer when it goes through the progress bar, but when it prompts me to allow the synch, it only prompts for 2540. It seems like while it reads that the extra 11 items are on the computer, it does not want to bring them over.

Up until this week, I always had the same number of items reading on both the device and the computer during synchs (except when it was adding to the computer from the device during a synch--I usually enter all new calendar items into the device rather than the computer).

Any ideas what is going on? Whenever I try to add one new entry to the device then do a two way synch, it wants to delete the 11 other items at the same time as it adds the new one.

Thanks for any feedback anyone can offer.

Cal