You cannot specify Object Deletions flow for Windows NT.
Select the Identity Synchronization for Windows node at the top of the navigation pane, and then click the Object Deletion tab.
Enable or disable the flow of deletions as follows:
Enable Object deletions flow from Active Directory to Sun Java System Directory Server to propagate deletions from the Active Directory environment to your Sun Directory Servers.
Enable both options for bidirectional flow.
Disable both options to prevent user deletions from propagating from one system to the other (Default setting).