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.
Here's the situation:
At battlefield 1 I control Yoritomo Kurei. At battlefield 2 I control an opposed personality. At home I control Yoritomo Saburo.
When I'm resolving battlefield 2 can I use Yoritomo Kurei's ability to move Saburo from home to the battlefield? I had that doubt because Kurei's text says "even if Kurei is at home" but I don't know if that applies to another battlefield.
No you cannot, per the second part of the Rule of Location: "2. If a Battle action is on a card in a unit (a Personality or attachment in play), the unit must be at the current battlefield in order to take that action."
Yoritomo Kurei is a card in a unit at battlefield 1 but the current battlefield is battlefield 2 so the Rule of Location forbids you to take his Battle action. The condition "Even if Kurei is in your home" means that the second part of the Rule of Location is waived while Yoritomo Kurei is in your home. If this ability could also be used while Yoritomo Kurei is at a battlefield which is not the current one, it would be written "Even if Kurei is not at the current battlefield".