Index: branches/release-33/lib/MT/CMS/Blog.pm
===================================================================
--- branches/release-33/lib/MT/CMS/Blog.pm (revision 1778)
+++ branches/release-33/lib/MT/CMS/Blog.pm (revision 1779)
@@ -559,5 +559,9 @@
     my $done          = 0;
     my $type          = $order[$next];
-    my $archiver      = $app->publisher->archiver($type);
+
+    my $pub           = $app->publisher;
+    $pub->start_time( $start_time );  # force start time to parameter start_time
+
+    my $archiver      = $pub->archiver($type);
     my $archive_label = $archiver ? $archiver->archive_label : '';