So I have this panel with lights and I use the ambient to make them "blink". This is in an animation over 130 frames or so.  Everything is good and then all of the sudden the shadernode settings stop working or are corrupt. I go back into materials and the Animate icon is OFF - although earlier it is on.

But in the animation palette all of my keyframes are still there!  Then if I turn the animation for the ambience back on it adds a dupilcate entry in the animation palette neither which will work now.  I cannot figure out why this is corrupting.

The only way I can correct it is delete the prop. Add it back and then redo the color settings and the animation. This is maddening. Something is causing the shader node to corrupt in the PZ3 file but I don't know how to correct it any other way.

Can the PZ3 be edited and fixed w/o having to redo all the animation?

Windows 10 - Poser Pro 2012 - 64Bit - 24GB RAM - 4 x 3.40 GHZ processor