@NTO2care Got to be honest i don't use the Vegas tracking but what you're asking i'm sure is Ok, i don't think brightness and contrast will affect the tracking because until the clip is rendered it's not fixed on the image, it'd be interesting to know if Vegas uses the orig file/the base image for things like that?

If i add Motion Tracking to an event it puts it 1st in the order at the top of the FX window, therefore all fx's after (to the right) won't count, you could turn off Brightness & contrast if there's a problem,

Have you tried it, are you having problems?