dump difference between 9.3 and master after upgrade

As I was updating my cross version upgrade tester to include support for 
the 9.3 branch, I noted this dump difference between the dump of the 
original 9.3 database and the dump of the converted database, which 
looks odd. Is it correct?

cheers

andrew

--- /home/bf/bfr/root/upgrade/HEAD/origin-REL9_3_STABLE.sql 2013-06-18 
08:45:22.518761202 -0400
+++ /home/bf/bfr/root/upgrade/HEAD/converted-REL9_3_STABLE-to-HEAD.sql 
2013-06-18 08:46:01.648782111 -0400
@@ -385,6 +385,7 @@ --
 CREATE FOREIGN TABLE ft1 (
+    "........pg.dropped.1........" integer,     c1 integer NOT NULL,     c2 integer NOT NULL,     c3 text,
@@ -413,6 +414,7 @@ CREATE FOREIGN TABLE ft2 (     c1 integer NOT NULL,     c2 integer NOT NULL,
+    "........pg.dropped.3........" integer,     c3 text,     c4 timestamp with time zone,     c5 timestamp without
timezone,