Make old and new wallets fully synced with the same wallet.dat (if you need running both at the same time, add listen=0 in to .conf) ..use dev repo http://92.222.28.197/release/ if you need old release. Try withdraw small amount (1NJA) to your NJA address and if everything is working you will see +0.98000000NJA on both wallets. Then when you tried send whole amount and you have good karma, you will see +11278.98000000NJA in both wallets.. if not, they will be only in old wallet and you can send them back to Bittrex and try again and again and again..