I have created a brightness effect for a synthesized image. It is (By time, Brightness Control, Gradient) and the gradient is 0% at t=0%, 50% at t=50% and 100% at t=100%. I have selected Speed option: linear (once) When I play the cue, I expect it to start at 0% and fade up to 100%. Instead it starts off at 100% and fades to 0%! Beyond version is 1.91/build 612. Is it the case with "Linear (once)" that it holds its final value indefinitely? If not, can we have an option that ensures this is so?