--- a/tests/test-copies-in-changeset.t	Fri Mar 18 18:09:46 2022 +0100
+++ b/tests/test-copies-in-changeset.t	Fri Mar 18 21:37:22 2022 -0700
@@ -316,6 +316,15 @@
   a -> k
 #endif
 
+Existing copy information is preserved by amend
+  $ hg cp a l
+  $ hg ci -m 'copy a to l'
+  $ hg showcopies
+  a -> l
+  $ hg ci --amend -m 'new description'
+  saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-*-amend.hg (glob)
+  $ hg showcopies
+  a -> l (no-extra !)
   $ cd ..
 
 Test rebasing a commit with copy information