K-12 Online will not allow an admin to edit a form if data has been saved on that form. In order to continue to edit the form, the form will need to be restored to its original state, when no students have filled it out. This requires you to go to the student's individual form who submitted the form and restore it.
Navigation: SCP > Student > (New or Returning) Student > Manager
1. Go the the student's whose form needs to be restored. Click the dropdown for options, Click Individual Form.
Here you can see the forms that are available to the student as well as the ones that are filled out and submitted. The forms that have been completed will be last.
2. Find the form you wish to restore. Click on the Restore Icon