Lan Manager servers should not reside in the same
domain as AS/U or Windows NT servers. If a Lan Manager server resides
in the same domain as an AS/U or Windows NT server, the NT Domain
Security Database will be replicated to the Lan Manager server,
corrupting the User Accounts Database on Lan Manager.
If you are migrating multiple Lan Manager servers in the same
domain to AS/U, either migrate all servers at once, or move the
AS/U servers to a different domain during migration. Clients are
able to access servers in multiple domains.