The following database tables have been deprecated as of Gravity Forms 2.3, and should not be utilized by any custom code or third-party plug-ins etc.
- wp_rg_form
- wp_rg_form_meta
- wp_rg_form_view
- wp_rg_incomplete_submissions
- wp_rg_lead
- wp_rg_lead_detail
- wp_rg_lead_detail_long
- wp_rg_lead_meta
- wp_rg_lead_notes
For more detail on the Gravity Forms 2.3 upgrade process, refer to this article.