Can I edit a form that has already collected responses?

Yes you can! Click on the edit button in the top right corner of your form manage screen to make updates to a live form. This will create a new version of that form, but the respondent link will stay the same.  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. 

For more information about how to edit your form after collecting responses, please Click here