user5117: I have a movie in after effects. I created a color key, applied a simple choker and then added a mask.
When I move the mask point, it is offset by the simple choker value - so I thought I would precompose the whole thing, so I can apply a second mask that isn't affected by the simple choker.
However, when I do that - the mask that was applied to the movie is not moved "inside" the precomp. It gets moved outside the precomp, and is still affected by the simple choker.
How do I solve this?

user5117: So, it was a simple thing: 
Instead of "Leave all attributes" when pre-composing, I needed to switch to "Move all attributes". 

5117: <p>I have a movie in after effects. I created a <em>color key, applied a simple choker</em> and then added a <strong>mask</strong>.</p>

<p>When I move the mask point, it is offset by the simple choker value - so I thought I would precompose the whole thing, so I can apply a second mask that isn't affected by the simple choker.</p>

<p>However, when I do that - the mask that was applied to the movie is not moved "inside" the precomp. It gets moved outside the precomp, and is <strong>still affected by the simple choker</strong>.</p>

<p>How do I solve this?</p>
 5117: <p>So, it was a simple thing: </p>

<p>Instead of "Leave all attributes" when pre-composing, I needed to switch to "<strong>Move all attributes</strong>". </p>
