Inbound Transportation Fees and Invoices

When I ship stuff from the UK to the USA, my Amazon Partnered Carrier fees appear in the transactions, but there is no invoice. I can figure this out as they are large and Amazon support has confirmed. For UK and EU shipments the costs are lower and it’s impossible to figure out if these costs are somehow bundled into the VAT invoices. Does anybody know if these shipment costs are in the invoices or do we have to trawl through the transactions to get the reported accounts straight?