I am playing Kyuden Kitsune Exp. and my opponent is playing Scorpion Ninjas. He attacks at provinces A and B, and I defend at Province B. He chooses to begin from the battle at Province A, and plays Asset Denial to move one if his Ninjas from province A to Province B. This is negated by my stronghold's trait. Then, he uses his stronghold and moves one of his Personalities from the battlefield to his home. The battle at Province A ends, and we proceed to engagement at Province B.
The question is: If he uses an action that moves one of his units to Province B (Ring of Water, Help from the Shadows, whatever), will the movement be negated? Is the Stronghold's trait relevant to the duration of each battle, or is it a matter of battlefields (since one movement to Province B has already been negated, all other movement to Province B is allowed freely)? If so, could he move anyone to Province A after playing Asset Denial (while we were at the first battle)?
I believe it's the former, but I would like to be sure.
Relevant text:
Asset Denial Battle: Choose your performing Ninja Personality with no non-Ninja Followers at the current battlefield: Move him to a different location.
Kyuden Kitsune Your forests are maddening. Negate the first movement each battle into attacking armies at your provinces' battlefields from other players' actions.