Index: branches/5.1.x/core/install/upgrades.sql
===================================================================
diff -u -r13140 -r13151
--- branches/5.1.x/core/install/upgrades.sql	(.../upgrades.sql)	(revision 13140)
+++ branches/5.1.x/core/install/upgrades.sql	(.../upgrades.sql)	(revision 13151)
@@ -1636,12 +1636,17 @@
 FROM <%TABLE_PREFIX%>Permissions
 WHERE Permission = 'in-portal:configemail.edit';
 
+ALTER TABLE Events ADD l1_Description text;
+
 UPDATE Events e
 SET e.l1_Description = (
 	SELECT p.Translation
 	FROM <%TABLE_PREFIX%>Phrase p
 	WHERE (p.Phrase = e.Description) AND (p.LanguageId = 1)
 );
 
-ALTER TABLE Events DROP Description;
+UPDATE Events SET Description = l1_Description;
+ALTER TABLE Events DROP l1_Description;
+
 DELETE FROM Phrase WHERE Phrase LIKE 'la_event_%';
+DELETE FROM PersistantSessionData WHERE VariableName = 'phrases_columns_.';