How can go back to render animation result only, during compositing?

Hi all artists & developers,
I am studying a project from modeling to compositing stage, a 80 frames animation clip.
But now I just rendered 33 frames for composite testing, I created a box mask in composite
(sorry for my bad uploading :pensive:, open in new tab for see image)
https://i.imgur.com/Dd2mQzR.jpeg
.

When I 'm go back to Layout Workspace to check some lighting & render other frame ranges, it just show composite result anytime, and 1~ 33 composite result, I can’t render animation & frames 34~80 ONLY, it made me frustrated…

other frames rendered emty because it just only showing frames 1~33 composite result…
https://i.imgur.com/OfFRyAj.jpeg
.

How can go back to render animation result only during compositing?

Before post this post, I can’t not find out any solution about this in search engine.
(maybe I don’t know the main keyword of this problem)

First time to ask question in here, I hope my explanation is clearly,

thanks all.

hi, from what i can see you rendered something and exported it as an exr. You are currently importing that sequence into the compositor and not using the rendered result from the file.