editing essays after deadline

I’m using Common App for one November 1st deadline, but it’s a safety. I know that I can write a good essay to submit, but I also feel that I might later want to tweak my essay a little. Is it possible for me to submit one version of the essay for the Nov 1st deadline, but later change the essay for the Jan 1st deadline?

You can submit different versions of your Common App essay to different schools, but once you’ve submitted it to a school, you can’t edit it for that school.