Complete noob here with After Effects but I feel I am so close of achieving it yet...
I have created this using Track Camera on the footage, then selecting a target, right click and create null object. Then I draw the line on the null object using the pen tool, so it creates it as a Mask. All I want is that mask to stay in the footage, no effects, nothing special. Just this yellow line.
So it does work fine if I have the mask selected and I play the footage, but it disappears when I see the video from Premiere (they are linked) What am I missing?