User sometimes accidentally delete their transaction history or invoices can get back in simple steps. QuickBooks empowers users to find back deleted transaction data. A user who deletes old invoice and unable to retrieve then follow the steps mentioned on the web page to get back all deleted QuickBooks Transaction.To access a deleted invoice, run the Voided/Deleted Transactions Report by selecting Reports and then Accountant. From here, you should be able to see the detail of the invoice in question. You can add columns for more information on this report as well. You can also get the answers of How do I find deleted transactions in QuickBooks? , How do you delete an invoice in QuickBooks online? ,Where is the gear icon in QuickBooks?, How do I change the invoice number in QuickBooks online? Source: https://www.myonepro.com/recover-deleted-invoices-quickbooks/