I have a Macro that runs when we need to remaove are add configurations to the UPDOWN Configuration The last command in teh Macro is the volume to the prognosis subvol on the nonstop and run the IRCNFUTL UPDATE_CONF using the updated CNFUPDN FILE
Try enter the commands manually in a TACL session, even start with dump out and write back in the existing config to see if the command can do that:
VOLUME $VOL.PRGNOSIS (wherever your Prognosis subvol is)
RUN IRCNFUTL /OUT UDCNF/ LIST_CONF UPDOWN (where 'UDCNF' is a made up filename that does not exist)
RUN IRCNFUTL UPDATE_CONF UDCNF
expecting output like:
Static Config file Updated Successfully $SUPP.P111.wvconf
Then try yours
RUN IRCNFUTL UPDATE_CONF CNFUPDN
Note how it writes to wvconf, then Prognosis restart reads that into the running Prognosis.
I hope this gives you some troubleshooting ideas but if you need further assistance then please open a case with IR Support so that we can work more closely with you on it.