In USG6310 Version V100R001C20SPC700 , the current configuration doesn't show audit profile commands ,
but in the saved configuration it can be seen,

Also according to the history commands ,customer did not delete it :
=====================================================================
===============display history-command all-users===============
=====================================================================
17:15:20 2015/10/22
Date Time User Command
10/22/2015 17:15:08 vt0 10.0.1.4 admin
Cmd:display diagnostic-information
10/22/2015 17:14:38 vt0 10.0.1.4 admin
Cmd:diagnose
10/22/2015 17:14:36 vt0 10.0.1.4 admin
Cmd:system-view
10/22/2015 17:14:26 vt0 10.0.1.4 admin
Cmd:display url-filter category pre-defined subcategory-id 159 // there are no any commands on deleting the audit profiles.
10/22/2015 17:12:12 CFM ** ** //Device finished rebooting
Cmd:ssl whitelist commit
10/22/2015 17:12:12 CFM ** **
Cmd:multi-interface