In myBooks you can create a duplicate copy of the existing invoice instead of creating a new one with the same customer details.
Goto Transactions > Invoices > Invoice list page opens
Place the cursor on the particular invoice that you wish to create a duplicate invoice. In the right-side corner, next to the download symbol you can find the duplicate symbol, just click on it.
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Duplicate invoice gets created for the same customer with the same amount of previously created invoice.
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