> It wasn't possible. We'd have to add it via JOSM or the web based editor. That's strange. What were you trying to do? If you convert your data to OSM's relat

> It wasn't possible. We'd have to add it via JOSM or the web based editor. That's strange. What were you trying to do? If you convert your data to OSM's relatively simple XML format, you can open that file in JOSM, and just press the upload button. That's what most people do with imports. It's possible to communicate with the OSM API directly and make API calls, but that's essentially what JOSM does. JOSM also has a validator, which can spot some problems with your data.