Sometime ago I joined OSM because I wanted to map the city I lived in, mostly because it had only 4 main roads mapped, so I started from scratch. Later I found that someone added map info on small towns near mine, I want to think (but I’m not sure) that it was an automatic import, because the information was (and it still is) very basic, but anyhow, useful. However, my city was left untouched, maybe to avoid duplicate data.
What I want to know, if possible is: Am I right about the data import? It’s possible to know who did it? And finally, it’s possible to merge my city data (if it exists in the import) with the actual OSM data?