The Conversation view is broken when the public folder is replicated between Exchange 2007 servers

When you replicate a public folder between Microsoft Exchange Server 2007 servers, the Conversation view in Microsoft Office Outlook is broken by the replication.

For example, users of Server A post a message several times in a public folder. The message is posted by using different subjects. If users arrange messages by conversation in Outlook, those posts are grouped in the same conversation. When Server B has the replica of this public folder, the users of Server B find that the posts that have different subjects are not grouped in the same conversation.

This issue occurs because Exchange 2007 overwrites the PR_CONVERSATION_TOPIC property by using the PR_NORMALIZED_SUBJECT property when Exchange 2007 replicates public folder items.

To resolve this problem, install Update Rollup 5 for Exchange Server 2007. For more information about Update Rollup 5 for Exchange Server 2007, see the following Exchange Help topic: For more information about how to install the latest Exchange service pack or update rollup, see the following Exchange Help topic:

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base: For more information about the new naming schema for Exchange Server software update packages, click the following article number to view the article in the Microsoft Knowledge Base: