With the recent updates to Gravity Forms the Data Persistence plugin is now deleting the most recent previous entry (regardless of who submitted it) and replacing it with the new entry when the form is submitted.
Only deactivating the plugin solves the issue with the deleted entries, however this is not the ultimate solution.
WP version and Plugins in use:
WP 3.5.1
Gravity Forms 1.6.12
Gravity Forms Data Persistence Addon 1.0
Gravity Forms CSS Ready Class Selector 1.0.1
Gravity Forms PDF Extended 2.0.1
Is there an ETA on when this bug will be addressed?
Thanks, have a great day
http://wordpress.org/extend/plugins/gravity-forms-data-persistence-add-on/