For Active Directory users only
Active Directory settings in NIMS cannot be automatically migrated in a way that is valid to v17 OMS. This is because OMS uses a different Active Directory implementation with different API calls than NIMS. This new implementation is through the WinLDAP API.
Unlike NIMS, you no longer need a local user account that matches the domain user account. It was a requirement in NIMS to have a local, dedicated system account for Active Directory. This user account is no longer needed; it is not used by OMS. Instead, OMS uses binding options (like Bind DN) to communicate with Active Directory. You can view the options you will need for configuring Active Directory at OMS by visiting Active Directory settings.