diff --git a/tryton/common/domain_inversion.py b/tryton/common/domain_inversion.py
index 335eee831a..15c3b58183 100644
--- a/tryton/common/domain_inversion.py
+++ b/tryton/common/domain_inversion.py
@@ -49,11 +49,11 @@ def eval_leaf(part, context, boolop=operator.and_):
         # In the case where the leaf concerns a m2o then having a value in the
         # evaluation context is deemed suffisant
         return bool(context.get(field.split('.')[0]))
-    if operand == '=' and not context[field] and boolop == operator.and_:
+    if operand == '=' and not context.get(field) and boolop == operator.and_:
         # We should consider that other domain inversion will set a correct
         # value to this field
         return True
-    context_field = context[field]
+    context_field = context.get(field)
     if isinstance(context_field, datetime.date) and not value:
         if isinstance(context_field, datetime.datetime):
             value = datetime.datetime.min
diff --git a/tryton/gui/window/view_form/model/record.py b/tryton/gui/window/view_form/model/record.py
index 5468943b85..62b3d7f76d 100644
--- a/tryton/gui/window/view_form/model/record.py
+++ b/tryton/gui/window/view_form/model/record.py
@@ -223,6 +223,8 @@ class Record(SignalEvent):
             self._check_load()
         value = {}
         for name, field in self.group.fields.iteritems():
+            if name not in self._loaded and self.id >= 0:
+                continue
             value[name] = field.get_eval(self, check_load=check_load)
         value['id'] = self.id
         return value
@@ -414,7 +416,7 @@ class Record(SignalEvent):
         else:
             for field in fields:
                 self[field]
-        self.validate([])
+        self.validate(fields or [])
 
     def expr_eval(self, expr, check_load=False):
         if not isinstance(expr, basestring):