Subcontracting

The Process is :
Set up a subcontractor
Setup a location for that sub contractror
Set up subcontractor cost by subcontractor or by process
Set up a routing with a subcontractor
Process a production order with a subcontractor
Determine when a purchase order is related to a production order
Determine the status of subcontractor operations on released production Orders
Send the Raw materials to subcontractor .
Receive the FG materials from Subcontractor
Create the Invoice for that services
Pay the amount to Vendor against Invoice .

Navision has the standard Functionality . Better to go through the Manufacturing II manual ( IV chapter ).

It explained the Total subcontracting process.

But when we follow these steps, in the case of receiving 2items only first line material is shown in the GRN properly. Second item w'nt be displayed. How this situation can be overcome?