Bill with BILL_STATUS = INV, IVC_PRINTED_FLG = N, Not able to print or re-print

I have an invoice that will not print.

BILL_STATUS = INV

IVC_PRINTED_FLG = N

PRELOAD_IND = 2 (done)

AR_ENTRY_CREATED = Y

GL_ENTRY_CREATED = Y

BI_APPROVAL_STATUS = 0 (not required)

I verified the GL entries were created and posted to GL

I verified the invoice was posted to the customer account.

This is an invoice that came from customer contracts.  It had some lines with negative amounts which normally requires approval, but the BI_APPROVAL_STATUS = 0 (not required).  The user stated that it wanted her to approve it and when she did it went to INV status.  I did a query and found that we have 14 such invoices that are in the same status condition.  They are across multiple units.  They all contained negative lines, but the total was not negative.