Upgrade page provides data migration tools for previous versions of Fess.
This page is not in a menu pane. To display this page, type /admin/upgrade/ to URL.
Download configuration backup files(.fess_basic_config and .fess_user) on Backup page before executing a migration process.
Type /admin/upgrade/ to URL after logging in as admin user. Select a target version and then click button to execute data mingration process.
Fess version from which you want to upgrade.