Here’s a changeset I was working on last night: http://www.openstreetmap.org/browse/changeset/7839451 Please disregard the comment as it reflects only a very small portion of work that went into the changeset. I kept making changes and forgot to jump out of the changeset.
Among other things I did was edit a relation http://www.openstreetmap.org/browse/relation/1536320/history which I had created shortly before that for a suburb named Woodbury. Let’s not get into whether Woodbury is technically a suburb or what a suburb is. It seems to fit the bill and it was suggested to me in another thread http://forum.openstreetmap.org/viewtopic.php?id=11885 by SK53, so that’s that.
In the initial version, it had a polygon member with role=boundary and a node tagged place=suburb with role=label. It worked fine, but I decided to try something else. I removed the polygon and instead used the four streets serving as natural (and official) boundaries of the suburb as role=boundary members. It seems to work well enough and I tested the relation through the OSM relation layer.
Today when I looked at the rendered map, the four streets that made up the boundary of the suburb became moved by so many meters. It is as if someone selected all members and dragged them off their location. Moreover, when I go into the OSM data, it tells me that the roles of the four streets in the relation have changed from “boundary” as they were in v3 to “” in v4. And it tells me that this happened in my changeset and no one else has touched this data.
Now, I can conceive that I highlighted the four streets and accidentally nudged them off their location, but I don’t believe I changed the roles as well.
Can anyone tell me who, how, when and why made these two changes (move and role change) to my four streets?
I don’t know if this change can be rolled back (or if rollbacks are done on changeset level). I would not want the whole changeset rolled back. It is easy enough for me to manually move the four streets back into their place if that’s the most efficient fix.
UPDATE: 8 hours later, I could not look at it anymore and moved the streets back in position. I have not fixed the roles in the relation and still would like any insight into what happened.