diff -r 01ee3e155726 -r efc6633e78e1 README
--- a/README	Thu Mar 16 21:16:57 2017 -0400
+++ b/README	Wed Mar 22 03:00:11 2017 +0100
@@ -125,6 +125,9 @@
   Using the extension will enable evolution, use 'experimental.evolution=!'
   to disable obsmarkers echange.  The old '__temporary__.advertiseobsolete'
   option is no longer supported.
+- the 'debugrecordpruneparents' have been moved into the 'evolve.legacy'
+  separate extension. enable that extentions if you need to convert/update
+  markers in an old repository.
 
 5.6.1 -- 2017-02-28
 -------------------