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 was checking on the Rulebook for something entirely unrelated, and I came across P10 where it mentions Engage is a special action that happens in it's own Engage round.
As an Action, can Moto Taigo Interrupt those, if they happened to move someone to his location? i.e Cavalry Engage, or Recovering What Was Lost?
Yes, absolutely.