Hi,

I succesfully converted multiple sales orders into only one invoice. Odoo creates an invoice with every line in each sales order.

The problem is Odoo is not grouping the lines by product and adding quantities. Instead, i have multiple lines of the same product. This is a mess if you have 5 or 6 lines of the same product with different quantities. The invoice is right, but unreadable. 

How can i group invoice lines by product?

Thanks.