As of March 31, 2022, Amazon announced they are discontinuing the “flat file” and “XML” formats of payment settlement reports we use to sync data. The remaining “flat file v2” format of the report will be the only one used going forward.
This “flat file v2” report does not currently associate the Inbound Shipment Cost with specific shipment IDs when shipping is purchased through Amazon. Because of this, settlement periods that only have this report type available won't be able to sync the individual Shipment Costs on the Accounting>Inbound Shipping page after a report is synced.
Although they cannot be tracked per shipment, the fees will still be accounted for as Inbound Shipping fees on the Profit & Loss report accordingly.
Due to this, the only time you would want to manually enter Shipment Costs on the Inbound Shipping page is if you do not pay for your shipping through Amazon. This is because, if you enter these costs manually but pay for your shipping using your Amazon disbursement, the expenses will be doubled once we sync the settlement report containing the fees.