Adding bar numbers and copyright

[FG1]

Sorry if this has been covered before, but I can't find a specific reference.

If a publisher re-publishes as score on which the copyright has expired, but changes or adds bar numbers to it, does this constitute enough to create copyright on the new edition?

I'm assuming it does, but...

[noqu]

As far as I know, adding bar numbers does not meet the "threshold of originality" requirements, so my answer would be "No".

Please see section "Editions of Public Domain Works" of https://imslp.org/wiki/Public_domain where this is explained quite nicely.

[FG1]

Thank you. The page you link to is full of information that I have been looking for since I started doing arrangements. Very useful.