All Invoices are created in Quickbooks Online (QBO). Even though you click the Create Invoice button daily in MaidCentral, the invoices come from QBO.
That means it is not possible to edit an invoice in MaidCentral. You will need to edit the invoice from within QBO. If any adjustments need to be made to the payment, you'll adjust their credit card transaction directly in Stripe or Authorize.Net.
In this How-To we demonstrate how to edit an invoice that the payment has not been posted for yet.