Js versioning doubt

Hi Guys,

I have seen something which i didnt understand.
I have a website abc.com/script.js which is working fine in aws using cloudflare as cdn.

After some days I changed script.js but it is not reflecting immedieatly in abc.com/script.js but it is reflecting in abc.com/scrpit.js?1

Can some one explain?
I cleared the cache in cdn also still script.js is not reflecting to new one.