> I've fixed all of the relations that had their contents replaced wholesale > by restoring to the last known good version and then adjusting as necessary > to match the current data. The one change to my method was to download all > of the relation members after I load the prior version from a .osm XML > file. That way if any of the relation members have since been deleted they > will be filtered out by JOSM when resolving the conflict with the existing > relation. > Thanks, > Peter > > Peter and everyone else, thank you for the help and restoring the relations. The workflow to restore the relations has been captured in the tracker [1]. As followup i'm going to write a diary post about the incident for a broader discussion on what might have caused the issue and how it can be avoided in future.
This is also a good experience for others to learn from on using complex workflows while restoring relations. Will notify on list when the diary post is up. [1] https://github.com/mapbox/mapping/issues/185#issuecomment-220950169 -- Arun Ganesh @planemad <http://j.mp/ArunGanesh>
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