To sum this up: The map tiles are not rendered instantly, meaning your data changes do not immediately show up on all zoom levels of the map rendering at openstreetmap.org . openstreetmap.org. Also see that other question and answers: [road-appears-and-disappears-at-different-scales](/questions/18390). Your browser caches map tiles, meaning you have to clear your browser cache or do a "full" non-cached reload of the website to get the new map tiles, e.g. by pressing Ctrl-Shift-R in Firefox. Services based on OSM are not connected to some kind of "master database", but use snapshots of OSM data. This means you'll have to wait some time before your OSM data changes propagate to the service you are interested in. This time delay is dependent on the external service, and not on OSM, and will vary from service to service.

To sum this up: The map tiles are not rendered instantly, meaning your data changes do not immediately show up on all zoom levels of the map rendering at openstreetmap.org . Your browser caches map tiles, meaning you have to clear your browser cache or do a "full" non-cached reload of the website to get the new map tiles, e.g. by pressing Ctrl-Shift-R in Firefox. Services based on OSM are not connected to some kind of "master database", but use snapshots of OSM data. This means you'll have to wait some time before your OSM data changes propagate to the service you are interested in. This time delay is dependent on the external service, and not on OSM, and will vary from service to service.