Last week we had a strage issue, ACL name has been disappered for 200 users in the same server, there is no changes in ACL logs, ADMIN4 and in logs. Then we have fix the issue to using the powetools. But we are investigating the cause. Can someone please advise.. Note : Admin4.nsf has been recently recreated in the server's cluster, we suspect this one of the cause, but still not clear.