ingenieroit
First turn the helpdesk offline and disable email fetching, next do a full mysql database dump of the current osTicket database (it's best to use the native mysqldump
command), move that .sql file to the new server, import that .sql file into a new database on the new server, copy over your old include/ost-config.php
file to the new server, and update the config file to update the connection/db information for the new server. Then you can login to osTicket as an Administrator on the new server and start the upgrade process.
You can view the Upgrade Documentation here:
Cheers.