Flash CS5 doesn't save advanced color effects on symbols

Question

In CS4 I'm used to inverting instances of my symbols by using a color effect:
Style: Advanced
Red: -100%  xR  +255
Green: -100%  xG  +255
Blue: -100%  xB  +255
However, everytime I save these settings in a CS5 file, upon opening the settings have changed to:
Red: 0%  xR  +255
Green: 0%  xG  +255
Blue: 0%  xB  +255
Has anyone else had this problem? I'm on mac OSX with the 10.0.2 update installed.

Answer 1

Had a couple students encounter the same issue.
They had complex animations of graphic forms made from overlapping white and black pieces. Setting the blending mode to multiply allowed them to overlap the animation on top of imagery. Alternately some people needed to invert the black to white and blendmode:screen it onto darker textures and colors.
This is easily accomplished through advanced color effect by multiplying everything by -100% and then offsetting by 255.
Unfortunately these values aren't saved...
You can use some code to do it, but this will get in the way of any timeline tweening. Our workaround was to drop any secondary animations of the graphic animation in a container and use code to modify _that_ clip.
import flash.geom.ColorTransform;
var ct = new ColorTransform();
ct.redMultiplier = -1;
ct.greenMultiplier = -1;
ct.blueMultiplier = -1;
ct.redOffset = 255;
ct.greenOffset = 255;
ct.blueOffset = 255;
myClip.transform.colorTransform = ct;
There might be another way around this that I missed, but it's a bummer that user entered values with observable and useful results aren't saved.