Can I edit a form that has already collected responses?

You can always edit your forms, even if you have already collected responses. 

when you edit any form:

  1. Your form will re-enter a draft status. When you publish them again, the revised iteration will be reflected with a new version number.
  2. Your collected responses are safe. Although you can't see them while the form is being edited, they will be visible again in the Form Manager once published.
  3. To preserve the legality of the responses already collected, your Form Details Report will specify what version of the form a particular response was collected on.
  4. While you are editing, your form will not be accessible to respondents. Don't worry; once the form is republished, all former version links will still bring people to your form.

Learn how to edit, archive or delete a form.