JSI Tip 9904. Exchange System Manager Displays Delegated User Permissions Differently on Windows 2000 and on Windows Server 2003?

Microsoft Knowledge Base Article 820282 contains the following description:

When you view the permissions that are assigned to an Exchange Server 2003 user by using Exchange System Manager on a computer that is running Windows 2000 and then view the same user permissions on a computer that is running Windows Server 2003, the permissions are displayed differently.