If a printed invoice is needed, void the invoice in Accounts Receivable. See the link below for full instructions. Then rebill in Billing (BL) using Tasks, Quick Bill Invoices; Tasks, Contract-based Invoices or Tasks, Cost-based Invoices.
Although invoice documents cannot print directly in the Accounts Receivable application; reports can be used as a workaround.
There are several reports in the Accounts Receivable module that show invoice amounts and detail for customers. You may choose to use these reports as a workaround document that you can print for customers:
Note: You can use Conditions on the above reports to only print invoices. You can condition reports that use the AR Transaction record to print where Transaction Type is Equal to Invoice. For reports that use the AR Activity record, you can condition reports to print where Status Type is Equal to Invoice.
Alternatively, you may contact your Sage business partner to design a custom report which can serve as an invoice document if you do not own the Billing or Service Management applications.
DocLink: How do I void an invoice in Accounts Receivable?