The notification template has been updated, but when the pdfs are getting downloaded for the previously generated documents, an old, not updated version is shown. Is it possible to regenerate pdf file for a document?
Old version is shown because already generated pdfs are stored in the BA database. To regenerate the document it is required to resend it:
Home > Finance > Documents > [document] > Send New Notification. Once notification is sent you can download new pdf for it.
If you do not want that notification to be actually sent to the customer, you can change an address it is sent to (e.g. temporarily change the customers billing e-mail address).