Fix submit electronic

booking.py

@@ -377,9 +377,7 @@ class Booking(Workflow, ModelSQL, ModelView):
         cls.check_finished(records)
 
     @classmethod
-    # @ModelView.button
     def bill_to_channel(cls, records):
-
         for rec in records:
             if rec.channel_invoice or not rec.channel or \
                 rec.channel.collection_mode != 'anticipated':
@@ -655,6 +653,8 @@ class Booking(Workflow, ModelSQL, ModelView):
         invoice.save()
         invoice.update_taxes([invoice])
         cls.write([bk], {'channel_invoice': invoice.id})
+        Invoice.validate([invoice])
+        Invoice.submit([invoice])
         Invoice.post([invoice])
 
     @classmethod