Changing Majors in Part I and Part II of application?

<p>Okay, so I thought I was going to major in Public Relations in Annenberg. So I put that as my first choice is my part I of the application. I put Economics as my second choice major.
Now that I think about it, I don't want to be in Annenberg. So I went online today and put Economics (cas) as my first major in the actual application. I found out that I cannot change the my major choices in Part I. </p>

<p>Is this going to be a problem?
I know Annenberg requires an essay too but if I want to go to CAS, do I still have to do it?</p>

<p>bump</p>

<p>if my second choice major required additional materials, do i still have to submit them?</p>