Copy payment to sales invoice

I would like to be able to copy a payment to sales invoice, in the example of I manage web sites for clients, and my payments to Crazy Domains are automatic; from that payment I want to copy it to a sales invoice to bill my client for the tx.

I don’t understand what you mean by payment

A payment in Manager is a transaction that records money leaving the business. Why would this be copied to a Sales Invoice which records a sale to a customer?