csvde import users from UTF8 .csv

Hi,

I am trying to import users using csvde from .csv file. All works fine except that the .csv file is saved as Unicode (utf8) and imported usernames have wrong characters for non ascii characters.
I have tried to use the -u switch, but then I receive error:

Invalid file format. DN Attribute not defined

How can I import users with correct utf8 characters if this can be achieved with csvde?