Hi,
For me it's not possible to Add a non existing product at the back end when I create a new order or edit an existing order. It's also not possible to delete a product from an order in the back end.
In both situations the "pop-up"/overlay screen appears, where I can confirm that I want to delete that item of where I can fill in the information of the product. But when I click on OK, the form gets blank, but futhermore nothing happens.
I'm using the business version of 1.6.0.
Kind Regards
Remko Rijpkema