never tried to migrate from such an old version. Since CSV is not available, the only way I could think of would be to use PHPMyAdmin and generate CSV files directly from the database. PHPMyAdmin has an option to export rows from a table as CSV for Excel, so you can clean the data afterwards and then import it into the newer i-doit.
I am not sure what is going on on your system. I guess you are using i-doit 1.9 open or 1.9.1 pro? Do have a mapping between an LDAP group and an person group in i-doit? Or do you use the "Standard LDAP group" in your system settings?
There is a little feature within the Admin Center that let you install add-ons via CLI. On a shell change to the installation directory of i-doit, for example "/var/www/html". There is a sub-directory called "admin" with a file called "index.php". With the following command it gives you a short help:
Welcome to our i-doit forums. If you use the CSV data import the only way to set "static values" will be within the CSV file. For example, add another column for the CMDB status and insert the value "ordered" for each object in a row.