When I accept a contract from the system requiring me to transport goods, those goods are sent to the warehouse. From the warehouse, the goods must then be transferred to the ship for transport. If drag-and-drop does not work because you are using a mobile browser, you can use the Goods Transfer (MTRA) window for this purpose. This window displays all your own goods in the warehouse, but not the goods for a delivery contract, even though they are present in the warehouse.
The goods to be delivered are in the warehouse.
The goods are not displayed in the MTRA window.