Although a second purchase would be required, it would only be for the cost of the difference between the licenses.

If you made the original purchase on their behalf, you would login to our Reseller webpages: http://www.kiwisyslog.com/private/login.php

1. Select "Place an order for an existing customer".
   
2. Select customer name from the drop down list in the window "Please select the company information you would like to view".
   
3. Press "View".
   
4. Select "upgrade to .." in the Edition window.
   
5. Press the "Buy Now" button make the purchase.