Thank you for your answer.
"The check payment should have been received against the invoices. Payments for invoices should not be posted directly to Accounts Receivable just because someone does not want to take the time find and apply the payment to the invoices, or because they did not take the time to create the invoices before the payment was received." Really :-), of course this is how it should be done, but if by mistake it happened, the question is how to fix it.
"It is recommended to correct the original transactions, " - When you say "recommended" does it mean that there is no other way to fix it without voiding it and by that messing bank reconciliation? As I read, it is possible to do in Quickbooks online for example, so I was looking to see if it is also possible to do it in the desktop version.