Is there a way to push address updates from Customer to Vendor when Customer/Vendor relationship exists?

In this case, the Vendor is really the same as the customer.  However, the customers get paid out in cash prizes for which they need to report via 1099.  The Customer/Vendor relationships were created and have been in place.  But, when the Customer address is updated, it does not update the vendor address and 1099s are mailed to the wrong address.

Is there a way when the Customer address is updated to push this to Vendor card to update the address at the same time?

Thanks.