=== modified file 'base_sale_multichannels/sale.py'
--- base_sale_multichannels/sale.py	2012-08-21 07:38:58 +0000
+++ base_sale_multichannels/sale.py	2012-10-24 07:54:37 +0000
@@ -535,7 +535,7 @@
         return super(sale_order, self)._import_resources(cr, uid, external_session, defaults=defaults, method=method, context=context)
 
 
-    def check_if_order_exist(self, cr, uid, external_session, resource, order_mapping=None, context=None):
+    def check_if_order_exist(self, cr, uid, external_session, resource, order_mapping=None, defaults=None, context=None):
         mapping_name = False
         for line in order_mapping['mapping_lines']:
             if line['internal_field'] == 'name':
@@ -546,6 +546,7 @@
                                         'from_external_to_openerp', resource,
                                         mapping=local_mapping,
                                         mapping_id=1,
+                                        defaults=defaults,
                                         context=context)
             if vals.get('name'):
                 exist_id = self.search(cr, uid, [['name', '=', vals['name']]], context=context)
@@ -562,7 +563,7 @@
         mapping, mapping_id = self._init_mapping(cr, uid, external_session.referential_id.id,
                                             mapping=mapping, mapping_id=mapping_id, context=context)
         exist_id = self.check_if_order_exist(cr, uid, external_session, resource,
-                                            order_mapping=mapping[mapping_id], context=context)
+                                            order_mapping=mapping[mapping_id], defaults=defaults, context=context)
         if exist_id:
             return {}
         else:

=== modified file 'magentoerpconnect/sale.py'
--- magentoerpconnect/sale.py	2012-08-20 09:39:45 +0000
+++ magentoerpconnect/sale.py	2012-10-26 08:47:28 +0000
@@ -401,15 +401,17 @@
                      mapping_line_filter_ids=None, parent_data=None, previous_result=None, defaults=None, context=None):
         resource = self.clean_magento_resource(cr, uid, resource, context=context)
         resource = self.clean_magento_items(cr, uid, resource, context=context)
-        if not resource['customer_id']:
+        if not resource.get('customer_id', False):
             #If there is not partner it's a guest order
             #So we remove the useless information
             #And create a partner on fly and set the data in the default value
-            del resource['customer_id']
-            del resource['billing_address']['customer_id']
-            del resource['shipping_address']['customer_id']
+            if 'customer_id' in resource:
+                del resource['customer_id']
+            if 'customer_id' in resource['billing_address']:
+                del resource['billing_address']['customer_id']
+            if 'customer_id' in resource['shipping_address']:
+                del resource['shipping_address']['customer_id']
             defaults = self.create_onfly_partner(cr, uid, external_session, resource, mapping, defaults, context=context)
-
         return super(sale_order, self)._transform_one_resource(cr, uid, external_session, convertion_type, resource,\
                  mapping, mapping_id,  mapping_line_filter_ids=mapping_line_filter_ids, parent_data=parent_data,\
                  previous_result=previous_result, defaults=defaults, context=context)
@@ -624,7 +626,7 @@
         # in the sale order and sometime it's equal to NONE in the address but at least the
         # the information is correct in one of this field
         # So I make this ugly code to try to fix it.
-        if not resource['customer_id']:
+        if not resource.get('customer_id', False):
             if resource['billing_address'].get('customer_id'):
                 resource['customer_id'] = resource['billing_address']['customer_id']
         else: