Let me provide additional information about attaching a class to the Exchange Gain or Loss, EdF1.
The option to add a class to the Exchange Gain Or Loss account is currently unavailable in QuickBooks Online. It is calculated once the payment is applied. That means you can only assign a class in the invoice and not at the time of payment.
In the meantime, you can check these articles for additional reference:
Please let me know if you have any other further questions on this. I'll be here to help.
