Unable to move global catalog between domains (server 2003 r2)

I am unable to move global catalog to primary domain controller

i followed the below articlie to move the GC.

Article ID: 313994
support.microsoft.com/kb/313994

below current server roles and GC information.

C:\Documents and Settings\Administrator.SCOREPLUS>netdom query fsmo
Schema owner                SPLUSDXBSRV.score-plus.com

Domain role owner           SPLUSDXBSRV.score-plus.com

PDC role                    SPLUSDXBSRV.score-plus.com

RID pool manager            SPLUSDXBSRV.score-plus.com

Infrastructure owner        SPLUSDXBSRV.score-plus.com

The command completed successfully.

C:\Documents and Settings\Administrator.SCOREPLUS>nltest /dsgetdc:score-plus.com
 /server:splusdxbsrv
           DC: \\SPLUSDXBSRV.score-plus.com
      Address: \\192.168.76.90
     Dom Guid: dc66e65c-ad07-4b80-9272-9fe95bf47084
     Dom Name: score-plus.com
  Forest Name: score-plus.com
 Dc Site Name: Default-First-Site-Name
Our Site Name: Default-First-Site-Name
        Flags: PDC DS LDAP KDC TIMESERV GTIMESERV WRITABLE DNS_DC DNS_DOMAIN DNS
_FOREST CLOSE_SITE
The command completed successfully

C:\Documents and Settings\Administrator.SCOREPLUS>nltest /dsgetdc:score-plus.com
 /server:splusqatar
           DC: \\splusqatar.score-plus.com
      Address: \\192.168.152.80
     Dom Guid: dc66e65c-ad07-4b80-9272-9fe95bf47084
     Dom Name: score-plus.com
  Forest Name: score-plus.com
 Dc Site Name: Default-First-Site-Name
Our Site Name: Default-First-Site-Name
        Flags: GC DS LDAP KDC TIMESERV WRITABLE DNS_DC DNS_DOMAIN DNS_FOREST CLO
SE_SITE
The command completed successfully

C:\Documents and Settings\Administrator.SCOREPLUS>

C:\Documents and Settings\Administrator.SCOREPLUS>dsquery server -forest -isgc
"CN=SPLUSQATAR,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,D
C=score-plus,DC=com"
"CN=SPLUSDXBSRV,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,
DC=score-plus,DC=com"