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, 19 March 2008
All these rule changes are driving me crazy
Rapid Deployment Battle : Target one of your Samurai Personalities at the current battlefield: Target two of your units not here. Move them there. If you are defending, straighten each of these units that moved.
Comprehensive Rules Move
If a unit that was in an attacking army at any point during a battle’s resolution tries to move to any battlefield (even the same battlefield whose battle resolved) during the same Attack Phase, the unit does not move. This is not negation of the movement (see Do Not). Note that even if it is known beforehand that the movement will not occur due to this rule or any other effect, an action that moves a unit as one of its effects can still be taken, because of the Blind cards rule. [REVISED 15 January 2008, again 16 March 2008 (replacing "fail" with "does not move"), again 19 March 2008 (covers any battlefield, not another battlefield, in line with Rulebook)]
Can I target personalities who already was at battle resolution this turn, for the effects?
Martin Lund (rules official), 19 March 2008
All these rule changes are driving me crazy
Rapid Deployment Battle : Target one of your Samurai Personalities at the current battlefield: Target two of your units not here. Move them there. If you are defending, straighten each of these units that moved.
Comprehensive Rules Move
If a unit that was in an attacking army at any point during a battle’s resolution tries to move to any battlefield (even the same battlefield whose battle resolved) during the same Attack Phase, the unit does not move. This is not negation of the movement (see Do Not). Note that even if it is known beforehand that the movement will not occur due to this rule or any other effect, an action that moves a unit as one of its effects can still be taken, because of the Blind cards rule. [REVISED 15 January 2008, again 16 March 2008 (replacing "fail" with "does not move"), again 19 March 2008 (covers any battlefield, not another battlefield, in line with Rulebook)]
Can I target personalities who already was at battle resolution this turn, for the effects?
You can target such a Personality.
He simply does not move.
Zen Faulkes (rules official), 19 March 2008
All these rule changes are driving me crazy
Actually, not much has changed. These are all just wording changes made for consistency -- the practical end result has not changed at all.