diff -ru fastimport_ori/exporter.py fastimport/exporter.py
--- fastimport_ori/exporter.py	2015-01-27 14:02:46.000000000 +0100
+++ fastimport/exporter.py	2017-06-02 00:01:50.373291600 +0200
@@ -57,6 +57,7 @@
     progress,
     trace,
     )
+from bzrlib.log import _compute_revno_str
 
 from bzrlib.plugins.fastimport import (
     helpers,
@@ -417,7 +418,26 @@
         # Filter the revision properties. Some metadata (like the
         # author information) is already exposed in other ways so
         # don't repeat it here.
+        message = revobj.message.strip()
         if self.plain_format:
+            if 'bugs' in revobj.properties:
+                fixed_bugs = revobj.properties['bugs'].split('\n')
+                fixed_bugs = [fixed_bug.split(' ')[0] for fixed_bug in fixed_bugs]
+                fixed_bugs = ["  - " + fixed_bug for fixed_bug in fixed_bugs]
+                message += "\n\nFixed bugs:\n"
+                message += "\n".join(fixed_bugs)
+
+            if 'authors' in revobj.properties:
+                authors = revobj.properties['authors'].split('\n')
+                if len(authors) > 1:
+                    authors = ["  - " + author for author in authors]
+                    message += "\n\nOriginal authors:\n"
+                    message += "\n".join(authors)
+
+            revno = _compute_revno_str(self.branch, revobj.revision_id)
+            if revno is not None:
+                message += "\n\n(bzr r" + revno + ")"
+
             properties = None
         else:
             properties = revobj.properties
@@ -429,7 +449,7 @@
 
         # Build and return the result
         return commands.CommitCommand(git_ref, mark, author_info,
-            committer_info, revobj.message.encode("utf-8"), from_, merges, iter(file_cmds),
+            committer_info, message.encode("utf-8"), from_, merges, iter(file_cmds),
             more_authors=more_author_info, properties=properties)
 
     def _get_revision_trees(self, parent, revision_id):