delete more than one edge

[sabawarnali]

in AI there is a scissor tool where you can delete multi vertex in one shape 

how can i do it in AE to animate it in trim path 

here the stroke is disconnected 

and they animated it as one object ! 

[Joost van der Hoeven]

You could you animate a shape on top with just a segment of the box and substracting that form the full box below?