HI WhitmanHolmes.
I understand why you would feel this way about how other invoices are not affected when you change settings. Turning off online payments only affects new invoices, so older invoices can still show the Pay now option.
Some businesses may still want to offer online payments on selected invoices, so the setting is managed per invoice.
Secure Invoicing adds safer invoice links and payment options to help protect against scams. We know updating older invoices one by one isn’t ideal.
More info: https://www.myob.com/au/support/myob-business/sales/receiving-payments/online-invoice-payments/deactivating-online-payments
Regards,
Genreve