You use the Audit Manager Administration command line utility to do this.
mfauditadm -r -c -d [-o report-file-name] -f audit-file-name
| -f audit-file-name | An audit file in the collection to be dumped and for which a report is to be generated. |
| -c | Include each available file in the collection. |
| -r | Generate a report for each file available for dumping. |
| -d | Mark the files as dumped |
| -o report-file-name | Name of the report file to be created. If this option is not specified, the report file will be derived from the audit-file-name, where the extension will be replaced by .txt. For example, if the audit-file-name was specified as mfaudit.DOCTEST.aud_3, the report file created would be named mfaudit.DOCTEST.txt |