Fixed #25693 -- Prevented data loss with Prefetch and ManyToManyField.

Thanks to Jamie Matthews for finding and explaining the bug.

docs/releases/1.7.11.txt

@@ -0,0 +1,13 @@
+===========================
+Django 1.7.11 release notes
+===========================
+
+*Under development*
+
+Django 1.7.11 fixes a data loss bug in 1.7.10.
+
+Bugfixes
+========
+
+* Fixed a data loss possibility with :class:`~django.db.models.Prefetch` if
+  ``to_attr`` is set to a ``ManyToManyField`` (:ticket:`25693`).

docs/releases/1.8.7.txt

@@ -21,3 +21,6 @@ Bugfixes
 
 * Fixed a regression in 1.8.6 that caused an application with South migrations
   in the ``migrations`` directory to fail (:ticket:`25618`).
+
+* Fixed a data loss possibility with :class:`~django.db.models.Prefetch` if
+  ``to_attr`` is set to a ``ManyToManyField`` (:ticket:`25693`).

docs/releases/index.txt

@@ -53,6 +53,7 @@ versions of the documentation contain the release notes for any later releases.
 .. toctree::
    :maxdepth: 1
 
+   1.7.11
    1.7.10
    1.7.9
    1.7.8