--- a/tests/test-exchange-D4.t	Fri Aug 15 12:56:01 2014 -0700
+++ b/tests/test-exchange-D4.t	Mon Aug 18 15:57:44 2014 -0700
@@ -61,10 +61,10 @@
   o  a9bdc8b26820 (public): O
   
   $ hg debugobsolete
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '', 'user': 'test'}
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
-  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 {'date': '', 'user': 'test'}
-  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '0 0', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 {'date': '0 0', 'user': 'test'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 {'date': '0 0', 'user': 'test'}
   $ cd ..
   $ cd ..
 
@@ -76,10 +76,10 @@
   # testing echange of "A1" (e5ea8f9c7314)
   ## initial state
   # obstore: main
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '', 'user': 'test'}
-  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 {'date': '', 'user': 'test'}
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
-  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '0 0', 'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 {'date': '0 0', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
   # obstore: pulldest
   ## pushing "A1" from main to pushdest
@@ -91,17 +91,17 @@
   added 1 changesets with 1 changes to 1 files
   OBSEXC: computing relevant nodes
   OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 2 obsolescence markers (123 bytes)
+  OBSEXC: pushing 2 obsolescence markers (129 bytes)
   OBSEXC: DONE
   ## post push state
   # obstore: main
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '', 'user': 'test'}
-  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 {'date': '', 'user': 'test'}
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
-  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '0 0', 'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 {'date': '0 0', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '', 'user': 'test'}
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '0 0', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
   ## pulling "e5ea8f9c7314" from main into pulldest
   pulling from main
@@ -111,21 +111,21 @@
   adding file changes
   added 1 changesets with 1 changes to 1 files
   OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (123 bytes)
+  OBSEXC: merging obsolescence markers (129 bytes)
   OBSEXC: 2 obsolescence markers added
   OBSEXC: DONE
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '', 'user': 'test'}
-  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 {'date': '', 'user': 'test'}
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
-  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '0 0', 'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 {'date': '0 0', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '', 'user': 'test'}
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '0 0', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '', 'user': 'test'}
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 {'date': '0 0', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}