Index: branches/5.1.x/core/units/helpers/multilanguage_helper.php
===================================================================
diff -u -N -r13935 -r14124
--- branches/5.1.x/core/units/helpers/multilanguage_helper.php	(.../multilanguage_helper.php)	(revision 13935)
+++ branches/5.1.x/core/units/helpers/multilanguage_helper.php	(.../multilanguage_helper.php)	(revision 14124)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: multilanguage_helper.php 13935 2010-09-12 17:49:47Z alex $
+* @version	$Id: multilanguage_helper.php 14124 2011-01-09 14:23:50Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -193,6 +193,35 @@
 			}
 		}
 
+		/**
+		 * Creates missing multilanguage fields in table by specified prefix
+		 *
+		 * @param string $prefix
+		 * @param int $src_language
+		 * @param int $dst_language
+		 */
+		function copyMissingData($prefix, $src_language, $dst_language)
+		{
+			$table_name = $this->Application->getUnitOption($prefix, 'TableName');
+			$this->curFields = $this->Application->getUnitOption($prefix, 'Fields');
+
+			if (!($table_name && $this->curFields) || ($table_name && !$this->Conn->TableFound($table_name))) {
+				// invalid config found or prefix not found
+				return true;
+			}
+
+			foreach ($this->curFields as $field_name => $field_options) {
+				$formatter = isset($field_options['formatter']) ? $field_options['formatter'] : '';
+
+				if ( ($formatter == 'kMultiLanguage') && !isset($field_options['master_field']) ) {
+					$sql = 'UPDATE ' . $table_name . '
+							SET l' . $dst_language . '_' . $field_name . ' = l' . $src_language . '_' . $field_name . '
+							WHERE l' . $dst_language . '_' . $field_name . ' = "" OR l' . $dst_language . '_' . $field_name . ' IS NULL';
+					$this->Conn->Query($sql);
+				}
+			}
+		}
+
 		function deleteField($prefix, $custom_id)
 		{
 			$table_name = $this->Application->getUnitOption($prefix, 'TableName');