I have just synced my iPhone, and checked the 'Sync iCal' box. I hoped this would back up my iPhone calendar onto my computer, but instead it wiped my iPhone calendar (I don't use iCal on my computer, so it is blank.) Is there any way I can restore my old calendar? I stupidly didn't do a new iPhone back-up before syncing, and so when I plugged my iPhone in for a second time it created a new back-up with the wiped calendar. Thanks.