Linking Deliveries to a particular Driver

Hi.

1) I created a 'Route Sales' order (No. 25) and completed the order by generating:

a) Delivery Number (No.100),

b) Shipment Number (No. 2001).

This transaction can be linked back to the driver for payment of commission through tables VTTK,VTTP,LIPS etc.

2)Along the route, Sales Orders (No. 26) and Delivery (No. 101) and several others were created for customers but these deliveries cannot be linked to any shipment.

Logically, Delivery No 101 belongs to Shippment No 2001(in my example), but this is not the case. NO SHIPMENT DETAILS EXIT for the subsequent sales and deliveries.

HOW can I link delivery no 101 to a shipment and to the driver.