I would like to engage in a discussion, about this question.
In my opinion it should be possible the score 2 points from your new scheme, even if you had scored one point before.
Schemes like Vendetta have a wording that you need to reveal a Scheme to get the first point.
(At the end of the chosen friendly model’s Acti- vation, if it hasn’t been Replaced, it damaged the cho- sen enemy model, and that enemy model has half its maximum Health or less (but is still in play), you may reveal this Scheme to gain 1 VP)
But others like Catch and Release have a different wording: Reveal: At the end of the Turn, if the chosen model is within 1" and LoS of an enemy Master or Henchman and not engaged by any other enemy model, gain 1 VP.
In the Rulebook we only have the following sentence: Each Scheme can be scored twice per game: once for its “Reveal” requirement and once for its “End” requirement.
I don´t see why it should not be possible to get both points. I would like to see the others side.