Carsten Dominik writes:

> I just tried to archive something and hit again the issue that
> org-get-outline-paths undefined.  Is there a specific holdup why this
> function has not been moved back into org.el?

org-get-outline-path was moved back to org.el in 3c3194113 (2020-04-26).

  % git rev-parse master
  20c13221942183290dc440ca6ba91597f243b9e7
  % git grep 'defun org-get-outline-path' master
  master:lisp/org.el:(defun org-get-outline-path (&optional with-self use-cache)