Index: inc/js/form_manager.js
===================================================================
--- inc/js/form_manager.js	(revision 15356)
+++ inc/js/form_manager.js	(working copy)
@@ -77,7 +77,7 @@
 
 	switch ( this.fieldTypes[$prefix + '_' + $field] ) {
 		case 'swf_upload':
-			return this.getField($prefix, $field, undefined, '[tmp_names]');
+			return this.getField($prefix, $field, undefined, '[json]');
 			break;
 
 		case 'date':