Editing an adobe animate cc in after effects

hello,

I designed a background in adobe animate and I'd like to be able to edit this background in after effects so my question is how to convert the background file into a png?
With an animation I made in animate, I wanted to edit it in after effects and my question is does this animation have to also be in a png sequence? 

My aim: I wanted to edit the animation in after effects with a background. I wanted to have different camera angles of the background by zooming into the background or turning it to a different position. As the background changes to a different angle, the animation will be at a different scene. That's why I was asking if the animation needs to be a png sequence. Let's say, in one scene the character of the animation jumps but when camera angle changes and the background is zoomed in, the character hides under the table. So for these different scenes, would the animation need to be separate png sequence files. So one sequence of the character jumping and another of the character under a table. Or one continuous swf file that includes both movements of the character jumping and hiding.

I hope this makes sense 

Thank you,

Bili