Internet Expenses are being auto-approved

Hi,

There are several expenses under the Pier Diem category which is bypassing Auditing and being auto-approved.   The audit rule is setup to Audit all expense reports with required justifications.  The Internet Expenses attribute associated with the Expense Item has "Always" on the Justification Required on the expense report template.

I am not sure the reason the items are not going into the audit queue. Is there a possible reason and how do I address?