R12 Expense Report Export - Hold column use?

Hi,

In the Expense Report Export Program output , Observed that there is a column Called "Hold" at Audit Report Section ..Please clarify the below :

1. When the Hold Column will have the some data ?

2. My Expense Report status is showing as "Hold Pending Receipts" . Is this Expense Report appears in the Expense Report Export Program output under Audit Section , by showing the hold Reason ? Then why My Expense Report Export is not showing any data ?

3. Also , in Expense Report Results Page , there is a Separate Column called "Holds". I understand that from here I can see all the Invoices which are on Hold. But I am not able to see ..