Populate End customer information

Hello,

I would like to know how to populate end customer information in install base when the initial ship to customer is different from the end customer.

Here is the scenario.

Org A manufactures and ships their  product to the resellers and resellers in turn ships to the end customers. As per stnadard functionality know that we can capture end customer information when shipto is different by capturing information on address details fields. But when we initialy ship it to the resellers we dont know the end customer at that time. One option is to update the install base after the end customer information is known by updating the install base manually. Is there any automated functionallity available when transaction like above happen on a large volume.