Index: backup/restorelib.php
===================================================================
--- backup/restorelib.php	(revision 4508)
+++ backup/restorelib.php	(working copy)
@@ -1894,6 +1894,19 @@
                             $dbrec->locktime        = backup_todb($info['GRADE_ITEM']['#']['LOCKTIME']['0']['#'], false);
                             $dbrec->timecreated     = backup_todb($info['GRADE_ITEM']['#']['TIMECREATED']['0']['#'], false);
 
+                            if (!empty($dbrec->itemnumber) and $dbrec->itemtype == 'mod') {
+                                $function = $dbrec->itemmodule.'_restore_itemnumber';
+                                if (function_exists($function)) {
+                                    $return = $function($restore, $dbrec->itemnumber);
+
+                                    if ($return !== false) {
+                                        $dbrec->itemnumber = $return;
+                                    } else {
+                                        continue; // Failed
+                                    }
+                                }
+                            }
+
                             if (backup_todb($info['GRADE_ITEM']['#']['SCALEID']['0']['#'], false)) {
                                 $scale = backup_getid($restore->backup_unique_code,"scale",backup_todb($info['GRADE_ITEM']['#']['SCALEID']['0']['#'], false));
                                 $dbrec->scaleid = $scale->new_id;