Syncing with iCal

Today my Microsoft exchange went down. I was able to get it back up, but everything in my CAL pro has been deleted. It showing up in iCal but I can't get it to merge over for some reason.
Any help?
Any help?
AppStore review: "Einstein said that things should be as simple as possible, but no simpler. He would have loved myCal!" 5*! Thank you user reveley!
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