diff --git a/docs/upgrades/upgrade_4.6.9-4.7.0.sql b/docs/upgrades/upgrade_4.6.9-4.7.0.sql
index 25516f810..3ef1837b7 100644
--- a/docs/upgrades/upgrade_4.6.9-4.7.0.sql
+++ b/docs/upgrades/upgrade_4.6.9-4.7.0.sql
@@ -50,11 +50,15 @@ update page set styleId=styleId+974 where styleId>25;
 update wobject set pageId=pageId+974 where pageId>25;
 update incrementer set nextValue=nextValue+974 where incrementerId='styleId';
 update style set styleId=styleId+974 where styleId>25;
-update discussion set messageId=messageId+50000;
-update discussion set rid=rid+50000;
-update discussion set pid=pid+50000 where pid<>0;
+update discussion set messageId=messageId+1000000;
+update discussion set messageId=messageId-999000;
+update discussion set rid=rid+1000000;
+update discussion set rid=rid-999000;
+update discussion set pid=pid+1000000 where pid<>0;
+update discussion set pid=pid-999000 where pid<>0;
 update incrementer set nextValue=nextValue+999 where incrementerId='messageId';
-update messageLog set messageLogId=messageLogId+999;
+update messageLog set messageLogId=messageLogId+1000000;
+update messageLog set messageLogId=messageLogId-999000;
 update incrementer set nextValue=nextValue+999 where incrementerId='messageLogId';
 update incrementer set nextValue=nextValue+999 where incrementerId='imageGroupId';
 update imageGroup set parentId=parentId+999 where imageGroupId>0;