EDIT - I finally got it working, but I don't really know how. I rebooted the computer and after the entire blockchain synced my old balance showed up. Had I known what to expect I wouldn't have gotten so vexed, however.
Do you know how blockchain works?
Your coins don't store in the independent file, they don't exist at all. But blockchain - it's all transaction between all adresses. So when it made full sync, you can see you ballance.
Be happy and have a nice day//