Actually, you can have different versions of your Common App.
Look at your general Common App instructions.
"The Common Application should generally be completed once, with identical copies sent to all colleges. You should create a new version if you wish to correct an error discovered after submission or provide new information not available when you first submitted the application. It is not necessary to "customize" your Common Application for individual colleges. Individual college supplements and supplemental essay questions should be used to provide special information to different colleges. Below are the steps necessary to create an alternate version.
Step1: You must submit the Common Application to at least one institution first. You cannot create an alternate version until this has occurred.
Step 2: You must log out of the application then go to this special URL: https://www.commonapp.org/CommonApp/...allowcopy=true
and login using your existing User Name and Password.
Step 3: Upon login you will be taken to the 'Common Application' page, where you will see information about the application you have already submitted. The ability to create an alternate version of your submitted Common Application is now activated, and you should click on the ‘Replicate’ link to make an alternate version of your submitted application. When this is complete, a second version will be visible on your screen and a special drop down list that will appear in the upper right corner of your application. You can use this drop down to move between application versions.
All data from your original version of your Common Application will be transferred to your alternate version, with the exception of any documents that you uploaded. You may edit any of this information before you submit it to another institution."