Hi Tech Support
I spoke with Samuel. They received the 10 POs as 10 Delivery Notes, without freight.
I told him at this point that his best bet is to manually calculate how much freight gets allocated to each receipt in total, and when they invoice each receipt to add that amount of freight as a miscellaneous charge, prorating by value, but unchecking the Cost to AP box. This will create a credit to the "Credit G/L account" as defined in miscellaneous charge maintenance for the freight amount.
Then enter the freight invoice directly in AP as an invoice, debiting the "Credit G/L account".
Steve