Need help on syncing contacts

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http://androidforums.com – I accidentally deleted all the contacts from my phone (I needed some extra space and I cleared up the data for the People app). I now want to re-add all the contacts by syncing my phone to my PC, but syncing does not put the contacts in my phone. I tried setting the "When conflicts occur, use PC data" but that didn't help. Help, anyone? So that I don't have to re-add them all manually :) (General)