gp-nested-forms-clear-session-cookie-on-save-and-continue.php

<?php
/**
 * Gravity Perks // Nested Forms // Clear Session Cookie on Save & Continue
 * http://gravitywiz.com/documentation/gravity-forms-nested-forms/
 */
add_action( 'gform_post_process', function( $form ) {
	if( !! rgpost( 'gform_save' ) && is_callable( 'gp_nested_forms' ) ) {
		$session = new GPNF_Session( $form['id'] );
		$session->delete_cookie();
	}
} );