I did some motion tracking and made the 2d tracks into empties in my scene. Then converted the constraint(empty) to f-curve and tried to use the simplify curves add on. It culls all of the key frames between the start and the finish of the animation, so only the beginning and end frames remain. This is not because I put the culling value too high; I can put it at .00001, and it still does the same thing. Any suggestions?