The system property de.smartics.projectdoc.upgrade.skip-auto allows to control the execution of the upgrade task. If this property is set to "true" then upgrade is not automatic. Admins would need to run the upgrade manually.

Per default this property is not set (same as a value of "false").

The upgrade task "AO Table Migration 4->5" migrates the tables from its old structure version 4 to the new structure version 5. The name of the tables reflect this by adding a number after the intial "PD" (and the initial identifier of the plugin). 

The description of the task is "Migrates the AO tables of version 4 of the projectdoc Toolbox to version 5."