JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You must be referring to the Autofill feature of the form.
Here is the user guide: How-to-Enable-Auto-Fill-Feature
Please take note that once the form was finally submitted, the saved session will be cleared. So it will no longer be available next time the form is loaded on the same browser.
If you need istead to go back to the exising submission data outside the View submission panel, you can use instead the Edit link of the form.
Let us know if you need further help.