Hello and welcome to OpenStreetMap Robbie2012,

As you’ve no doubt noticed, edits that you make update the one shared map that everyone sees.

That’s why it’s important that only valid edits are made to the map. I think that it is unlikely that any of the changes your made with changeset 166736403 actually exist.

If you want to experiment with the editors, you can do so over at http://api06.dev.openstreetmap.org (an exact copy of the main site apart from the map display). If you want to map an imaginary world, http://opengeofiction.net/ might be what you’re looking for.

The lift this block, contact us at data@openstreetmap.org, quoting Ticket#2025052510000236.

Best Regards,

Kai, on behalf of OpenStreetMap’s Data Working Group