Calendar info disappeared

[thegeorgeman]

I have a Treo 700p, and have synced it on my desktop PC and old iBook for almost 2 years, and was able to transfer old calendar info from previous Kyocera Smartphone and Palm V. I just started syncing on new MacBook, and noticed all my old calendar events are missing before October. They are gone from the Treo, PC, and MacBook, but they still are on my old iBook, probably because I haven't synced with it recently. How can I restore the calendar info from the iBook so I don't lose it forever. I need the calendar info that is still on the iBook to get on the Treo, PC and MacBook, any suggestions?