In v2016 if you print an invoice with Output Mode set to preview it goes straight to preview (click on Print Invoice Invoices have been printed successfully Click OK - you can now see the invoice & print or email it ) In v2018 if you print an invoice with Output Mode set to preview it takes you back to the Print Invoice Form rather than straight to preview as it used to do in v2016 (click on Print Invoice Invoices have been printed successfully Click OK Print Invoice Form shows - you have close this form to get to the previewed invoice(s)