OF-611 - Monitoring plugin 1.3.0 is not updating IDs of older archived messages

Changed Conversation.java JiveID back to 50 from 600

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@13481 b35dd754-fafc-0310-a699-88a17e54d16e

src/plugins/monitoring/src/java/org/jivesoftware/openfire/archive/Conversation.java

@@ -78,7 +78,7 @@ import org.xmpp.packet.JID;
  *
  * @author Matt Tucker
  */
-@JiveID(600)
+@JiveID(50)
 public class Conversation implements Externalizable {
 
 	private static final Logger Log = LoggerFactory.getLogger(Conversation.class);