In many cases, they should flow through to owner statements - for example, if the guest cancelled at the last minute and wasn't entitled to a full refund, the revenue would presumably still appear on the owner statement.
In other cases, the cause is that the cancelled booking was not correctly adjusted to update the Charges to whatever is appropriate (maybe $0, maybe half) per your cancellation policy, so the booking financial data is wrong and therefore showing incorrectly.
If you have specific examples of bookings that are not handled properly, please write in to the Helpdesk with an explanation of what is wrong, and we can analyze why that is and what needs to be changed to correct it.
