Fixed bug:

  Objects defining _p_deactivate methods that didn't call base methods
  weren't loaded properly. https://bugs.launchpad.net/zodb/+bug/185066

src/CHANGES.txt

@@ -19,6 +19,9 @@ Bugs Fixed
 - Calling __setstate__ on a persistent object could under certain
   uncommon cause the process to crash.
 
+- Objects defining _p_deactivate methods that didn't call base methods
+  weren't loaded properly. https://bugs.launchpad.net/zodb/+bug/185066
+
 3.9.0b5 (2009-08-06)
 ====================
 

src/ZODB/serialize.py

@@ -514,9 +514,9 @@ class ObjectReader:
         obj._p_oid = oid
         obj._p_jar = self._conn
         # When an object is created, it is put in the UPTODATE
-        # state.  We must explicitly deactivate it to turn it into
+        # state.  We must explicitly invalidate it to turn it into
         # a ghost.
-        obj._p_changed = None
+        obj._p_invalidate()
 
         self._cache[oid] = obj
         return obj

src/ZODB/tests/testConnection.py

@@ -663,7 +663,22 @@ class EstimatedSizeTests(ZODB.tests.util.TestCase):
         self.assert_(cache.total_estimated_size >= 0)
 
 
+class class_that_ignores_deactivate(Persistent):
+    def _p_deactivate(self): pass
 
+def loading_objects_that_ignore_deactivate_bug_185066():
+    """See https://bugs.launchpad.net/bugs/185066
+
+    >>> db = ZODB.tests.util.DB()
+    >>> conn = db.open()
+    >>> conn.root.c = class_that_ignores_deactivate()
+    >>> conn.root.c.x = 1
+    >>> transaction.commit()
+    >>> conn2 = db.open()
+    >>> conn2.root.c.x
+    1
+
+    """