Hello - Andy from OSM’s Data Working Group here.

Yes - someone has edited the border so that the de-facto Artsakh Republic is no longer part of de-jure Azerbaijan. Currently the relations look like:

https://www.openstreetmap.org/relation/364110

and

https://www.openstreetmap.org/relation/2374762#map=8/39.735/47.230

Going back a couple of months we see:

http://overpass-turbo.eu/s/RbU

and

http://overpass-turbo.eu/s/RbV

There is a disputed boundary here, and while one side or other could argue that the previous situation in OSM wasn’t to their liking, the current situation (with both boundaries broken) is in no-one’s interest. It might be best to avoid piecemeal edits for now and let someone more familiar with admin boundary repairs fix it. I’ll raise the issue over at https://forum.openstreetmap.org/viewtopic.php?id=65676&p=14 to see if anyone there has time (you can see regular “repair” edits by people from there at http://osm.mapki.com/history/relation.php?id=364110 ), and we (the DWG) will look in more detail at which changesets caused the problem in the first place.

Best Regards,

Andy

PS if you’d like to email the OpenStreetMap’s Data Working Group directly you can do so via data@osmfoundation.org