I was searching for a while how to merge to calendars in iCal. Sometimes, task where added in one calendar when I was using iCal on my iPhone, sometimes they where added into another one when I was working on my computer.

As I didn't found a menu or function helping me with my problem I tried another way.

I found the solution when I was exporting my iCal calendar to my google calender.

This is going to be tough :

First step:

In iCal, click on one of the calendar you want to merge.

Select the "export" Menu, and save the calendar in a .ics file format.

Second step:

In iCal select "Import" from the "File "menu. Choose "Import an iCal file in the window that appears. Then select the .ics file that you just saved. iCal is asking in witch Calendar you want to import.

Done

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