A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
Assume P'an Ku takes control of a personality using his ability. The personality's owner, during the course of a battle opposing the personality taken by P'an Ku, plays Coward! and targets P'an Ku, which straightens P'an Ku. The personality P'an Ku took control of goes back under the owner's control.
Does that personality return to the owner's control in the owner's home or at that battlefield?
Assume P'an Ku takes control of a personality using his ability. The personality's owner, during the course of a battle opposing the personality taken by P'an Ku, plays Coward! and targets P'an Ku, which straightens P'an Ku. The personality P'an Ku took control of goes back under the owner's control.
Does that personality return to the owner's control in the owner's home or at that battlefield?
Per the CR, if a Personality changes control while at a battlefield, it goes into its new controller's army at that battlefield.