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.

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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.

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To resolve this problem, install Update Rollup 5 for Exchange Server 2007. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

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

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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:

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