I am trying to clone my MBA SSD to an external drive that already has another partition on it. The OS on the external and the MBA SSD is Lion. I am running Mountain Lion on the computer I am using CCC on. How do I go about cloning the MBA SSD to the external drive while also keeping the Lion partition I already have on the external? I would like to just add the MBA SSD to the external drive without deleting the current partition. Thanks!