When you upgrade to IBM WebSphere CloudBurst V184.108.40.206 from an earlier release, your existing audit records are deleted.
A new more robust auditing system is provided in WebSphere CloudBurst Appliance 220.127.116.11. A side effect of the upgraded system is the loss of all existing audit records.
Resolving the problem
You should download your existing audit records before upgrading to version 18.104.22.168. See the Audit Reporting section in the WebSphere CloudBurst Appliance Information Center for instructions on how to download your audit records.
WebSphere CloudBurst appliance