Currently if COP Order line commission is changed to zero in CHANGE mode and the 3rd Billing screen was accessed before, the zero commission of the line is NOT part of the recalculated commission of the Header that is shown on the Billing screen. I discussed with Edward as i considered it as a bug, but Edward said that in some situations, users prefer this behavior.

My idea is to add a flag that if user prefers that total commission will be recalculated and included zero commission lines, it will be done. I consider that as the "normal" behavior.