We are having an issue that when we reprint posted invoices in SO-F, they do not include the backordered items that appeared when the invoice was posted.  
On such a problem invoice, I voided it and made sure all lines were released and the backorder showed up on the invoice, I posted the invoice.  But then after it was posted I went back in and reprinted the invoice again and the backordered items were gone.  This does not happen on every invoice and I cannot pinpoint what could be causing it.  Anyone else have this issue?  Am I missing a default that fixes this?  
We are currently on Classic version 2004.1 Tech Support update 5/1/07.