I got a copy of my Addressbook and Calendar to my PC for reorganization and cleaning. After finished with that I cleared the databases in my Curve 8300 and did a sync from ASCII files. All the data is ok but Birthday and Anniversary data from my address book wasn't added to the Calendar as when I add an entry in the Curve by hand.

Do someone have any experience with this?
Is there any way to fix this? Or how should I have done this?

Thanks in advance.