Hi Sayna,
‘updateAudit’ and ‘readAudit’ on attributes are currently ONLY shown in the Contact application in the context of the object for which you made changes. The Admin Audit Trail only shows attribute changes that happen when an ‘audited’ event is invoked from the client. An ‘audited’ event is one that has ‘audit=true’ set. This means that if you set ‘updateAudit’ to true on an attribute that is changed through a class that does not have its ‘update’ event audited, you will not see it in Admin.
Note that this is different from ‘readAudit’ and ‘updateAudit’ on attributes. Event auditing is the only thing that shows up in the Admin application and it only shows attributes that have changed when that event is called.