iExpense - Missing Receipts Causes Expense Report To Go Into a Loop for Approvals

We are seeing the issue, when several expense line items require a receipt and the user applies the receipts to only one of the line items, that the expense report goes into a loop for approvals.  By this I mean that the manager approves the expense report, then it is forwarded to the next level managre and so on.  We have no issues when the receipts are attached at the header (which the user is supposed to do). If all receipts are missing we do get a message to see the system administrator.

I thought I read somewhere that when this happens, that the system routes the expense report through all the levels of approval twice, making sure that everyone knows that there are receipts missing and giving all approvers a chance to reject the expense report.  But I don't remember where I saw the article nor can I find the article again.