Oops. You can revert/delete the elevation lines, it's for a project outside of OSM in an OSM file (opengeofiction), I didn't remember it was here and didn't seen it was sent to the database. Sorry.

You can close this discussion.

Hi. Sorry for the late answer, but I removed this tag, it doesn't mean anything and doesn't exist.

Bonjour,
Pourquoi avez-vous fait ces modifications qui ne semblent pas refléter la réalité du terrain ? Cela semble être de la fiction.

I can see the tag 'line_attachement' on several nodes, that is invalid, but there is already the correct tag 'line_attachment'.