Click on 'Customize' in the admin bar at the top of the window while viewing the invoice.
Click on the 'Sprout Invoices' panel.
Customize the various options for the invoice and publish.
Ensure that the changes saved.
Repeat Steps 3-8 but using a different Sprout Invoices template for the Invoices. ( WP Dashboard > Sprout Invoices > General Settings > Invoices > Invoice Template )
Repeat Steps 3 - 8 but using an Estimate instead of an Invoice
This PR resolves #620
Testing Instructions