Import Database from Dude 3.4 to Dude v6

Hi everyone!,
I need to know how to import a database from dude 3.4 to dude v6. The backup file from my old dude was on .xml format.
I try to import to the new dude with the command: “/dude import-db file=(my_backupfile)” from winbox but i can’t, Winbox show “action timed out”.
I need help to do this, because i need to work with the new Dude with the old configuration.

Best regards.