Add Product Location to Invoice

So I have managed to add product location to the product list and in the to view in the order but I am struggling to get this working on the invoice.

So when I have all my printed invoices I want to be able to see on the invoice the location of each product so I can pick and pack the items as needed, anyone done anything similar and able to advise on how best to try and achieve this.

Thanks in advance!

Hi, I am trying to do the same. I would appreciate it if you share your experience and if you were able to do it. Thanks