According to https://bugster.forgerock.org/jira/browse/OPENAM-8850, since AM 13, there's a new option available to ssoadm, "--nolog", which seems to be used to prevent ssoadm from generating audit logs, which can be convenient and speed up the ssoadm execution in firewalled environment.
This is also mentioned in these support tickets at least:
https://forgerock.zendesk.com/agent/tickets/13452 and #14022.
However, when searching on backstage or ea, that option can't be found. Also, is there an equivalent option for Amster if it makes sense ? If no, shouldn't there be one ?