--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parts/django/tests/regressiontests/admin_scripts/app_with_import/models.py	Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,7 @@
+from django.contrib.comments.models import Comment
+from django.db import models
+
+# Regression for #13368. This is an example of a model
+# that imports a class that has an abstract base class.
+class CommentScore(models.Model):
+    comment = models.OneToOneField(Comment, primary_key=True)