On the 2.4.x branch:

backport of r1837357 from trunk.
  *) mod_md: When the last domain name from an MD is moved to another one,
     that now empty MD gets moved to the store archive. PR 62572.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1837358 13f79535-47bb-0310-9956-ffa450edef68