If Expedia collects the payment from the guest they will send the amount you have to pay to Expedia and not the amout the guest paid. The guest has received the invoice from Expedia so you do not need to invoice them for the room charges.
===Reconciliation ===
For Expedia bookings you will have a "Reconcile" button in the "Details" tab of the booking.
When you click on the button you can report changed stay dates, cancellations by guest, no shows, changed cancellation penalties and changed stay prices to Expedia.
===Info Codes===
Info Codes in the "Info" tab of the booking show you relevant information.