Moving Nav Server To A Different Domain

Our Navision server was initially setup about 3 years ago on a Windows 2000 Active Directory domain called "abc.com". Two years ago we installed a new SBS 2003 Server and migrated all workstations over to a new Active Directory domain called "abc.local". The Navision server remains a member of the old domain, which periodically causes issues with our backups. We would like to migrate the Navision server (running native Navision 4.0 database engine on Windows 2003 Server) over to the new SBS 2003 Active Directory domain, but want assurances that this won't cause any problems with Navision and our client users.
Thanks.