  using :meth:`select_related` is an error as well.
  
  .. versionchanged:: 1.5
  
  .. note::
  
      When calling :meth:`~django.db.models.Model.save()` for instances with
      deferred fields, only the loaded fields will be saved. See
      :meth:`~django.db.models.Model.save()` for more details.
  
 
</s> remove     When calling :meth:`~django.db.models.Model.save()` for instances with
    deferred fields, only the loaded fields will be saved. See
    :meth:`~django.db.models.Model.save()` for more details.
 </s> add     .. note::

        When calling :meth:`~django.db.models.Model.save()` for instances with
        deferred fields, only the loaded fields will be saved. See
        :meth:`~django.db.models.Model.save()` for more details. </s> remove options. Also note that using :meth:`only` and omitting a field requested
using :meth:`select_related` is an error as well.
 </s> add options. </s> remove .. versionchanged:: 1.5

 </s> add  </s> remove Some fields in a model won't be deferred, even if you ask for them. You can
never defer the loading of the primary key. If you are using
:meth:`select_related()` to retrieve related models, you shouldn't defer the
loading of the field that connects from the primary model to the related
one, doing so will result in an error.
 </s> add     Some fields in a model won't be deferred, even if you ask for them. You can
    never defer the loading of the primary key. If you are using
    :meth:`select_related()` to retrieve related models, you shouldn't defer the
    loading of the field that connects from the primary model to the related
    one, doing so will result in an error. </s> remove If fields in the serialized data do not exist on a model,
a ``DeserializationError`` will be raised unless the ``ignorenonexistent``
argument is passed in as True::
 </s> add     If fields in the serialized data do not exist on a model,
    a ``DeserializationError`` will be raised unless the ``ignorenonexistent``
    argument is passed in as True::
    Using :meth:`only` and omitting a field requested using
    :meth:`select_related` is an error as well.
  using :meth:`select_related` is an error as well.
  
  .. versionchanged:: 1.5
  
    Using :meth:`only` and omitting a field requested using
    :meth:`select_related` is an error as well.
  
      When calling :meth:`~django.db.models.Model.save()` for instances with
      deferred fields, only the loaded fields will be saved. See
      :meth:`~django.db.models.Model.save()` for more details.
  
keep keep keep keep replace keep keep keep keep keep
 Adapted uses of versionchanged/versionadded to the new form.

Refs #20104. 
docs/ref/models/querysets.txt