Abacre.com

I'M, USING ABACARE RETAIL POINT OF SALE.I WAS TRYING TO DELETE UNUSED ORDER AND NEXT TO IT HAS A SAME BUTTON WHICH SAYS DELETE ORDERS BY MISTAKE I HAVE PRESS THAT NOW IT HAS DELETED THE INVOICES FOR A MONTH AND I CAN SEE THEM IN EXCEL ONLY BUT CANT SEE WHOM I HAVE ISSUED THE INVOICES HOW DO I RECOV...