--- a/tests/test-obsolete.t	Tue Oct 22 11:16:55 2013 +0200
+++ b/tests/test-obsolete.t	Thu Oct 24 10:42:50 2013 +0200
@@ -678,3 +678,12 @@
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     add c
   
+
+Check import reports new unstable changeset:
+
+  $ hg up --hidden 2
+  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  working directory parent is obsolete!
+  $ hg export 9468a5f5d8b2 | hg import -
+  applying patch from stdin
+  1 new unstable changesets