Go to page in InExchange Network: Invoices\Sent invoices
Yes, you can easily copy a sent invoice.
Follow these steps:
1. Select your already sent invoice and click on the invoice number as in the picture.
2. On the new page, click on the button Copy as in the picture below.
3. A new invoice is now created with the exact same content. Make any possible corrections and then click on Continue and Process invoices to send the invoice, just as usual.