Should notes handle replace commits?

Hi,

Take the following dummy repo:

  $ git init
  $ git commit --allow-empty -m 'first'
  $ git notes add -m 'first note'
  $ git commit --allow-empty -m 'second'
  $ git notes add -m 'second note'
  $ git commit --allow-empty -m 'third'
  $ git notes add -m 'third note'

  $ git log --format='%s - %N'
  third - third note

  second - second note

  first - first note

Now, let's say you have some other history that you want to graft:

  $ git checkout --orphan old
  $ git commit --allow-empty -m 'real first'
  $ git notes add -m 'real first note'
  $ git commit --allow-empty -m 'real second'
  $ git notes add -m 'real second note'
  $ git commit --allow-empty -m 'real third'
  $ git notes add -m 'real third note'
  $ git log --format='%s - %N'
  real third - real third note

  real second - real second note

  real first - real first note

Assuming that the "first" commit on master is the same as the "real third" on old, you can graft with:

  $ git rev-parse master~ old | xargs > .git/info/grafts

And then:
  $ git log master --format='%s - %N'
  third - third note

  second - second note

  real third - real third note

  real second - real second note

  real first - real first note

Now, if you try to do the same with replace:

  $ rm .git/info/grafts
  $ git replace master~2 old
  $ git log master --format='%s - %N'
  third - third note

  second - second note

  real third - first note

  real second - real second note

  real first - real first note

Note how "real third" now has "first note", instead of "real third note".

So the question is, is this the behavior this should have?

Cheers,

Mike