Index: gtk2_ardour/rhythm_ferret.cc
===================================================================
--- gtk2_ardour/rhythm_ferret.cc	(revision 3239)
+++ gtk2_ardour/rhythm_ferret.cc	(working copy)
@@ -277,6 +277,7 @@
 
 		i = tmp;
 	}
+	session->commit_reversible_command ();
 
 }