Console commands worked
1º Old wallet
I used the command
dumpprivkey <1337address>
2º New wallet
I used the command
importprivkey <1337privkey> [label]
I dont understand
The address has been transferred but my balance is at 0? some command to update the balance?
oops I forgot. I think you need to run wallet with -rescan after importing address. If on windows create a shortcut for the 1337-qt.exe and edit the properties of the shortcut and find where it says "Target" add -rescan after the path to the 1337-qt.exe
Ok, after that it run for few whiles then stop responding and crashed. Can't open it normally now, acting like before when i switch wallet.dat to old one.
It will become unresponsive but you need to let it run for awhile. -rescan scans all blocks downloaded so it can take awhile.
old wallet.dat cant be used with new wallet 1.9.0.0 - instant crash.
using importprivkey also crashes even with -rescan

Open the old wallet and export your private keys. Then in new wallet use the importprivkey and wait awhile. It may become unresponsive but just let it sit. It took about 2 minutes for me to import a address.
Well, I can't get to GUI when rescaning, Splash shows "Reading addresses" and then crashes.
Addresses were imported to wallet by importprivkey, then wallet restarted and opened by shortcut with -rescan, now it shut down wallet when rescan finishes and leave it inaccessible for next lunch with nornall icon or shortcut :/