Parking Error?

I parked my 4 MAC 250 Wash lights that are downstage, White, so that the guys could set up while I worked on my color scroll.

After they were done, I grabbed the fixtures, adjusted the parameters, and unparked the lights, but they wouldn't go back to the correct colors. I tried clearing and closing all windows, and they stayed white. The only fix was to log off and log back on. any ideas why?
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