With very few exceptions, data used in earlier versions
of Host On-Demand will
be automatically migrated when you begin using Host On-Demand Version 13. 
The upgrade of the Host On-Demand server is supposed to be transparent to the clients. After the upgrade, the clients have their same sessions defined and all their customizations, for example, macros and keyboard remaps, continue to work as before. On platforms where an uninstall program for Host On-Demand is not provided, the administrator must back up some files and directories before upgrading, and then restore them after the upgrade.