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.
I cause another player an honor loss of 0, say through an effect that causes them to lose honor equal to a personalities personal honor, can it then be increased through cards such as Mercantile Conflict?
Mercantile Conflict: http://imperialassembly.com/oracle/#cardid=10947
An honor loss (or gain) of zero is not considered to be an honor loss (or gain)