Trying to fix a messy set of books I inherited on Sage Cloud Accounting Canada. The problem: A double payment was entered last year. First an invoice was entered. The payment was made with 'other payment' format. Thus the payment did not connect to the invoice which continued to show as outstanding. Previous bookkeeper tried to correct this by adding a vendor payment without reversing the 'other payment'. Then tried voiding the vendor payment but used the wrong date on the voided payment (making it current year). As a result now my bank account is showing this as money received. What's more is that they voided the vendor payment which should have been matched to the invoice and wasn't instead of the incorrect 'other payment'.  How can I correct this mess?