Just wondering how you can tell the light direction from the viewport icon? In max you have it so the Light direction is shown as little rays coming from the rectangle. In Cinema it is just a star in the centre of the rectangle. Bit confusing to me to have it shown like this. Maybe there's a way of showing it as a direction
Pics of
c4d Disk light (Star in centre)
3ds max Disk light (Directional Rays)