diff --git a/odex25_project/project_base/models/sale_order.py b/odex25_project/project_base/models/sale_order.py
index f5e4240e9..9e2710c44 100644
--- a/odex25_project/project_base/models/sale_order.py
+++ b/odex25_project/project_base/models/sale_order.py
@@ -49,6 +49,5 @@ class SaleOrderLine(models.Model):
     def _prepare_invoice_line(self, **optional_values):
 
         vals = super(SaleOrderLine, self)._prepare_invoice_line()
-        vals['quantity'] = self.phase_qty if self.is_downpayment == False else self.qty_to_invoice
-        vals['analytic_account_id'] = self._context.get('analytic_account_id')
+        vals['analytic_account_id'] = self._context.get('analytic_account_id', vals['analytic_account_id'])
         return vals