Thank you. The file you provided really helped my understanding of how Card Wipe effect works. But my situation is a bit different. I created the duplicate of the bottom precomp, because I wanted to apply the Card Wipe effect to that precomp as well. So, that it then dissolves into another precomp and so on. Now, when transition occurs, I have a sudden “jump”, as if the dimensions of the precomp used as a Back Layer and that same (visible) precomp, which is placed later in time on the timeline, do not match.