Changing versions
Same NamelessMC version, different PHP version
This is possible by just changing the version in Named Hosting dashboard. No additional work is required. For example, you can change from pr12
to pr12 on PHP 8
and back without data loss.
Newer NamelessMC version
If you want to keep your current site, update first in StaffCP > Update then change the version.
If you want to reset your site, change the version and click the 'Reset' button.
Older NamelessMC version
It is not possible to downgrade, if you want to do this you have to reset your site. Change version and click the 'Reset' button.