I need to sync my Macbook and iphone calendars. I need all entries on both devices. More often than not, I add the entry on my iphone. However, whenever I sync with my Macbook, the calendar is wiped clean from my iPhone. I have tried every permutation of checking boxes in iTunes or in iCal, but nothing works.
iPhone 4S, iOS 6.1.3, Macbook Pro running OS X 10.6.8