After lengthy discussions it appears that payment methods are not allocated to orders. This has to be undertaken manually. So an eBay order might be paid by credit card, PayPal or cash but this is not recognised by Linn. Payment methods shown in csv files imported from an external web site cannot be mapped in Linn defaulting to credit account. This means that orders have to be manually altered for a .csv file to be correct for allocating to the correct bank account for importing into say Sage say using Tradebox