Index: lams_tool_forum/src/java/org/lamsfoundation/lams/tool/forum/service/ForumService.java
===================================================================
diff -u -rbe6aeaa61647f690cc832be9174f30036ebe8e0e -rb5d42eff472154edcc323444fb26d318a398481c
--- lams_tool_forum/src/java/org/lamsfoundation/lams/tool/forum/service/ForumService.java	(.../ForumService.java)	(revision be6aeaa61647f690cc832be9174f30036ebe8e0e)
+++ lams_tool_forum/src/java/org/lamsfoundation/lams/tool/forum/service/ForumService.java	(.../ForumService.java)	(revision b5d42eff472154edcc323444fb26d318a398481c)
@@ -549,13 +549,19 @@
 		Forum toContent = Forum.newInstance(fromContent,toContentId,forumToolContentHandler);
 		forumDao.saveOrUpdate(toContent);
 		
-		//save topics in this forum
+		//save topics in this forum, only save the author created topic!!! and reset its reply number to zero.
 		Set topics = toContent.getMessages();
 		if(topics != null){
 			Iterator iter = topics.iterator();
 			while(iter.hasNext()){
 				Message msg = (Message) iter.next();
 				//set this message forum Uid as toContent
+				if(!msg.getIsAuthored())
+					continue;
+				msg.setReplyNumber(0);
+				msg.setCreated(new Date());
+				msg.setLastReplyDate(new Date());
+				msg.setHideFlag(false);
 				msg.setForum(toContent);
 				createRootTopic(toContent.getUid(),null,msg);
 			}