Hello, I use Odoo 8 and when I import sales order from a different installation, odoo 8 as well that doesn't have taxes set up, my newly imported sales orders don't have taxes added to them, I need to add them one by one, which is very tiring.

In the other installation, we don't and can't have taxes set up for administrative reasons, so we need to have taxes appearing automatically when when import sales orders, we have set default taxes in the new odoo 8 instalation, I have tried to figure out how to trigger this in sale.py , but I can't figure out how to make this happen, I tried also to create default taxes for each product, found them already set but nothing triggers taxes to be added automatically!

https://s12.postimg.org/5i75lf7st/Untitled_1.jpg

Even when I validate sales orders, nothing happen to taxes, they are not included.

Please help.