From the TV Tropes page Stealth Run
Pacifist runs are possible in many levels throughout the Jedi Knight series of games, popular amongst some enthusiasts who enjoy following the Jedi Way, especially once one attains the ability to disarm or to mind trick their way through the countless hostiles. Averted in some levels thanks to a stated mission objective. Clearing a level is also an unstated event trigger late in Jedi Outcast. Ergo, a disarm-only approach can require very un-Jedi-like measures to proceed.
Which level is that? Is there a patch that changes the event trigger?