Save your results.
Do not review the audit trail before exporting it. The review would be another unsaved change of the data.
In the Audit Trail window, click PDF Export.... The button is only active, if you have saved your results.
Select a location for the PDF file and provide a file name.
Click Save.
In the Audit Trail window, click Print. The button is only active, if you have saved your results.
A preview of the printed audit trail report is shown in the Audit Trail Report window.
Click Print
.
A Print dialog opens. Specify your print preferences and click Print