Remove Global Settings Tree from the System Container
Microsoft Office Communications Server 2007 and Microsoft Office Communications Server 2007 R2 will reach end of support on January 9, 2018. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.
When you are sure that the migration was successful, remove the original global settings tree from the System container.
Warning
Do not remove the global settings tree from the System container all server DN references and all user DN references have been modified.