if action_attributes["if-unused"]
begin
old.delete_with_history!(new, @changeset.user)
- rescue OSM::APIPreconditionFailedError => ex
+ rescue OSM::APIAlreadyDeletedError, OSM::APIPreconditionFailedError => ex
xml_result["new_id"] = old.id.to_s
xml_result["new_version"] = old.version.to_s
end