I made an import from 2.0 and it worked fine,
but there is something curios about the user.

In the old database was just contact_name and contact_email, user did not have passwords.

After importing data, some use had passwords,
something like that: "-E'c=9v}y`-(3wICfX_nO"W)
some user (50%) did not have a password.

Did the script set this passwords while importing?

Michael