afaik there are no tools released to do that, i know retail has one, and probably fyyre as well
gamedbd does have an export command you can use to make it export a role to an xml file that you can edit, but on 496 it seems to be missing an import command, so i'm not sure how one would import it back into the db
also do not do any of this while gamedbd is running or you will corrupt your db, the db is quite fragile