PO with 2 Third party Carriers

I have a situation where I need to put 2 Third party Carriers on a Po for Freight.

First carrier delivers to the dock, and the second carrier takes the product across the ocean to our Supply Chain Center.

I successfully created 2 separate "third party freight" cost elements, and then created 2 separate Miscellaneous charge/Landed Cost. one for each cost element. The charge is tagged as Freight expense and that it is NOT supplier charge.

Po and receipt testing went fine.

My problem is in AP with voucher creation. I can get only one Third Party Style voucher to create correctly. The second voucher doesn't pull in any freight info. no amounts.