Trying to use MSDSS to migrate from Netware 6.5 to Windows 2003.

Finding that bercause we already use AD for exchange side of things
then when it migrates from NDS to AD it already finds the object in AD
and so creates a new one with an extra character.

eg Login 400123 in NDS is also in AD already so creates 400123X
so doesnt migrate permissions.

Any help with this would be appreciated.