schoschi
@habi: Now, it looks in fact resolved - thanks for that improvement! 🙂 

When I wrote my last comment, I was looking at freshly downloaded OSM data and your change of the way was not yet existing in that data. So maybe the notesresolver plugin did post the note comment before the actual change of the OSM data was published on the OSM server, so notesresolver had no choice but to add a reference to an older changeset? 