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.
A player, 7 August 2007
I remember the old rules when you brought a personality into play or it changed controls it entered play or under your control at home. So things which brought a personality into play in the current battle would bring the personality into play at your home and then it would move to the current battle.
Does it still work this way now?
If I play death after life or let them fight their dead does the personality enter play in my home and then move to the current battle or does it enter play at the current battle?
Zen Faulkes (rules official), 7 August 2007
I remember the old rules when you brought a personality into play or it changed controls it entered play or under your control at home. So things which brought a personality into play in the current battle would bring the personality into play at your home and then it would move to the current battle. Does it still work this way now?
I think you're misremembering. The default for things entering play was in home, but specific card text could override that. I think you're thinking of weird cases where someone took control of something in mid-battle by some effect that did not specify location.
If I play death after life or let them fight their dead does the personality enter play in my home and then move to the current battle or does it enter play at the current battle?
Latter.