lelandf

Gravity Forms 1.9 introduced a feature called <a href="https://www.gravityhelp.com/gravity-forms-v1-9-save-continue/" rel="nofollow ugc">Save and Continue</a> which allows form submitters to save their progress, and continue it later.
When a form submitter saves their work, they are given a unique URL (a “password” of sorts) that will allow them to pick up where they left off.
If they lose this URL, they may ask you (the site administrator) for assistance.
By default, there is no way to recover this unique URL without going directly to the database and finding it, which can be a tedious process.
Instead, you can install this plugin, which will list all the incomplete submissions in a simple table format. Each row in the table includes the following information about each incomplete submission:
<ul>
<li>Form ID</li>
<li>Date/time created</li>
<li>Email address (only available if user emailed recovery link to themselves)</li>
<li>IP address</li>
<li>UUID (this is the “password” users use to pick up where they left off)</li>
<li>A “View Entry” link (this is what you give the form submitter who lost their URL)</li>
</ul>
This plugin does not provide an admin interface to manipulate incomplete submissions, but you can click the “View Entry” link to edit submissions on the front-end, just like a user returning to finish an incomplete form could.
For more advanced functionality related to incomplete submissions in Gravity Forms, I suggest looking into the <a href="http://www.gravityforms.com/add-ons/partial-entries/" rel="nofollow ugc">Partial Entries add-on</a>, available to Gravity Forms Developer License holders.
The idea behind this plugin is to provide a very basic way of recovering “Save and Continue” links without having to search the database directly, and nothing more.
Please note that Gravity Forms is a commercial plugin, which I am not affiliated with in any way.

Save and Continue Link Recovery for Gravity Forms

If a Gravity Forms form submitter loses their "Save and Continue" Link, this will help you recover it.

B Hays

WordPress plugin for Gravity Forms that allows for easy removal of entries from forms. Remove all entires or entries specified by a date range.

Gravity Forms Remove Entries

and helpful. Trashes all posts so you can also undo the action if necessary. 

Straightforward

Remove Gravity Form entries by form or date range.

Save and Continue Link Recovery for Gravity Forms vs Gravity Forms Remove Entries