diff -r 30a027c0e327 -r 85da230c316a mercurial/configitems.py
--- a/mercurial/configitems.py	Thu Jul 05 15:07:29 2018 -0400
+++ b/mercurial/configitems.py	Thu Jul 05 15:07:29 2018 -0400
@@ -209,6 +209,9 @@
     default=None,
     generic=True,
 )
+coreconfigitem('convert', 'bzr.saverev',
+    default=True,
+)
 coreconfigitem('convert', 'cvsps.cache',
     default=True,
 )