--- a/mercurial/upgrade_utils/actions.py	Thu May 19 01:40:37 2022 +0100
+++ b/mercurial/upgrade_utils/actions.py	Thu May 19 01:24:16 2022 +0100
@@ -380,6 +380,9 @@
     description = _(b'An iteration of the revlog focussed on changelog needs.')
     upgrademessage = _(b'quite experimental')
 
+    touches_filelogs = False
+    touches_manifests = False
+
 
 @registerformatvariant
 class removecldeltachain(formatvariant):