I give some ideas with 'Upgrade from ocs 2.0.5 to 2.7'.
Starting from 2.2, it's possible to go to any upper version executing sql scripts provided in 'file/updates' dir (with Apache2 stopped).
But before 2.2, it's not easy due upgrade is done each version by each version : so I suggest compare database schema and write your own upgrade sql script.
But 1.02RC3 is very very old : why you want keeping history ? Did you consider directly create a new server ? Before, you need to verify if old agent could inventory on 2.2 server or more ...
(old versions are available at launchpad.net)