Quote from: markonik on June 12, 2015, 09:05:11 PM

In my wallet I had a little bit over 20K BLKs.

Now I have 19,371.87 BLKs.

What happen?

In transaction I don`t see any transaction related to amount of 630 BLKs.

Please check blockchain.

https://chainz.cryptoid.info/blk/address.dws?BGDjfnnNXrzuMoDtEWh5mW2Y77ziAhQbcB.htm

The block explorer does still show a balance of 20,046.85666512 BLK.
Since the wallet has been not staking for a while (last one 2015/05/20), maybe you found a block once you went online again and the "missing" BLK are probably just not spendable at the moment?

If that is not the case, you could try a rescan (just start the wallet with parameter -rescan for that).