Fix

booking.py

@@ -154,7 +154,6 @@ class Booking(Workflow, ModelSQL, ModelView):
     @classmethod
     def __setup__(cls):
         super(Booking, cls).__setup__()
-        # ALTER TABLE hotel_booking RENAME COLUMN party_seller TO channel
         cls._order.insert(0, ('create_date', 'DESC'))
         cls._transitions |= set((
             ('offer', 'confirmed'),
@@ -815,7 +814,7 @@ class Booking(Workflow, ModelSQL, ModelView):
     def get_untaxed_amount(self, name):
         res = _ZERO
         for line in self.lines:
-            res += line.total_balance
+            res += line.total_amount
         return res
 
     # def get_occupancies(self, name):

channel.py

@@ -55,12 +55,6 @@ class SaleChannel(ModelSQL, ModelView):
         ('after_sale', 'After-Sale'),
         ], 'Collection Mode', required=False, help="Commission collection mode")
 
-    @classmethod
-    def __setup__(cls):
-        # alter table hotel_channel drop column commission;
-        # alter table hotel_channel drop column payment_method;
-        super(SaleChannel, cls).__setup__()
-
     @staticmethod
     def default_company():
         return Transaction().context.get('company')

patch.sql

@@ -0,0 +1,4 @@
+
+ALTER TABLE hotel_channel DROP COLUMN commission;
+ALTER TABLE hotel_channel DROP COLUMN payment_method;
+ALTER TABLE hotel_booking RENAME COLUMN party_seller TO channel;