Cannot migrate printers from Server 2003 (32bit) to 2008 R2 0x80070705

Hello,

I have the following situation :

1. Installed a new printerserver with 2008 R2
2. Used the new print migration snap in to add the old printserver as well
3. Exported the printers from the old printserver to a file
4. Tried to import this file on the new one.
5. Received following error in event viewer :

   Printbrm.exe (the Printer Migration Wizard or the command-line tool) failed to restore print queue E181_ENGIN_9400IIR. The restore process will continue, skipping this queue. Error: 0x80070705. The printer driver is unknown.