This is done using GravityForms User Registration Module.

You’ll set the option to create the user if no email or user exists. Then when the person submits a entry it would register them. There’s a few modifications to this extension that extend the capability to allow auto sign in. I would explore under GravityWiz website for this feature or explore the Github to find something that will do the trick.

Another option is to have no user registration and use another page called “Edit” and have the same form loaded but utilize GravityWiz populate entry into the form (where it will auto populate the form data when the Entry ID is submitted) and when the click submit and it will update it.

Hope this helps. I’ve used this approach before for user profiles when creating a GravityForms driven portal.

Gravity View does support editing entries as well if you utilize this feature. I haven’t been a big fan of it though since the styling is typically different and bugs out with some third party extensions that extend field capabilities. But nonetheless they did add it. Another note, I found that the GravityView Edit View also had some security keys to prevent unathorized access, so sharing a url may not work as easily like the other method I mentioned above could provide.

Hope this helps someone.