P03B2002 Receipt not showing when displaying 'All' transactions

Inquire by customer number using 'All' radion button.  Customer,parent,payor all the same number.   Will not show a particular receipt amount in the gross amount column.   This receipt was matched to two invoices which were later voided (unmatched), but the receipt was not voided.  The receipt was matched against alternative invoices at a later date, so it has no open amount now.   Other receipts that have been matched show in the grid.  Why does this receipt not show?

Thanks