Date Changed Booking
I have two bookings in this month Nov2020 but guests can not travel due to covid-19. Then I accept to change their new travel date which is in Nov2021. And also make amendment in their original booking to 2021. So it's a new date appear on this reference. I want to know that booking.com issue the commission invoice based on the old booking or amendment booking? for Nov2020 or Nov2021? Thanks in advance for your answer.