By default no copying will be done. While `notes.rewrite.amend` and `notes.rewrite.rebase` are true you also need `notes.rewriteRef` which tells it what notes refs should be rewritten. And it has no value by default. (you can set it to a glob copy over all notes refs)
This is configurable. By default, amend and rebase operations will copy them forward. See git-config(1) under `notes.rewrite`.