I cleaned up some of the coastline using Bing Maps and potlatch 2. It ws fun. Unfortunately I also deleted three untagged nodes. I later noticed the advanced info and realised that they weren’t empty! as far as I can tell there is no beginners way of fixing the problem or even reverting my changes. The change log has the nodes in question but there isn’t an easy way (for me so far) to filter out whether the node was part of a line string or not. If this were possible, my changes could be reverted, stripped of the offending deletes, and resubmit (however that’s done).

For now the mystery three points will have to go, for the sake of a smooth coastline; at least until someone else reverts my changes or is able to filter on advanced criteria!