Cost of a reservation from an online system or from the online widget can not be changed. This is the main principle of online booking systems – the guest pays the amount at which he has booked. Therefore, if you relocate a guest to another room type in Bnovo PMS, you need to click “No, keep the current value.”
Note that if you press “Yes, recalculate”, the amount of the reservation on the extranet will not change, but it will be recalculated in BnovoPMS in accordance with your rate plan, and that will lead to incorrect commission report.