NW65sp3 (Novell OES)
named.nlm version

we want to create slave-nameservers on our novell servers for load-
balancing/fail over purpose.
our master/root name server is a non-novell one, this should be no problem
according to the documentation.
so if i want to import a dns zone within imanager 2.5 mu2 as primary or
secondary zone i get the following errors:
"Essential Attributes Absent"
"Invalid file"

where is my mistake/error in resoning?
which are essential attributes? how does a valid file look like?
is there someome who can help me out?
thanks in advance!