Drop Ship functionality in 11.5.10.2

Hi,

Using 11.5.10.2, we are testing the Drop Shipment functionality for sales orders. When receiving a Drop Shipment item in Inventory, we are not allowed to enter a tracking number or a freight charge, so this data cannot be passed to Receivables for invoicing.  Has anyone got an idea on how to pass this data to Receivables for invoicing? 

For non-Drop Shipment sales orders, we enter freight and tracking number when doing a Shipment Confirmation and this data passes thru to Receivables for invoicing. 

Thanks in advance for any suggestions.

Rgds,

Chuck