gw-cache-buster.php: Fixed GPMPN compatibility issue where custom starting page is not applied.

Author: barthc

gravity-forms/gw-cache-buster.php

@@ -301,6 +301,14 @@ public function ajax_get_form() {
 			return rgar( $_REQUEST, 'form_theme' ) ?: $slug;
 		}, 10, 2 );
 
+		add_filter( 'gpmpn_default_page_' . $form_id, function( $page ) { 
+			if ( rgars( $_REQUEST, 'atts/page' ) && rgget( 'gpmpn_page' ) ) {
+				return rgget( 'gpmpn_page' );
+			}
+
+			return rgars( $_REQUEST, 'atts/page', $page );
+		} );
+
 		$atts = rgpost( 'atts' );
 
 		// GF expects an associative array for field values. Parse them before passing it on.