Editing Clone Stamp Effect
I'm looking to do 2 things as I learn the clone stamp tool in After Effects. I am trying to remove this cord from the shot:

1. I am using clone stamp on a completed Premiere Pro project. I only need to use the clone stamp on 1 shot that appears a few times in the video. I don't seem to be able to split individual clone strokes and delete the scenes in between shots that I am actually using it for. When I try and split the layer, it doesn't change the clone strokes.
2. How can I fix this smudging:


