/TransferIMRoleIfNecessary:{Yes | } Specifies whether to transfer the infrastructure master (IM) role to this DC, in case ...

/TransferIMRoleIfNecessary:{Yes | } Specifies whether to transfer the infrastructure master (IM) role to this DC, in case it is currently hosted on a global catalog (GC) server, and you do not plan to make this DC a GC. Choose Yes to transfer the IM role to this DC in case this is needed; in that case, make sure to specify "/ConfirmGC:No". Choose No if you want the IM role to remain where it currently is.