How do you update the hidden tree shaders?

I downloaded the built-in shaders that match my unity install (4.2.2) and did a quick update to the *Tree Creator Leaves Optimized* shader which is being use all over my project. Unfortunately, it does not seem to be updating anything at all in my scene or in the hidden, un-editable shaders in each tree (the ones that get auto created by the tree creator). Is there something special that I need to do to get it to work? Do I need to place the shader in a specific location so that it uses mine instead of the built-in one? This is the shader list that I copied into my project. I modified TreeCreatorLeavesOptimized because that's the one the system seems to auto generate. ![alt text][1] [1]: /storage/temp/16836-prtscr+capture.jpg