Hi AngelaSCOTT
Thanks for your post.
Normally, the invoice will always email or print with the current information on it. If the invoice has been paid when we send it out it will show the Applied to date amount. What we could do is, if this invoice has been previously emailed to the customer then we could find that attachment in our sent emails under Outlook. If it's sent via MYOB emailing system, attachments can't be recovered.
Although it is not ideal removing the payment, printing/emailing the invoice, then reprocessing the payment is still a guaranteed option to have that result.
Best regards
Genreve