text: BEGIN;
  UPDATE station_lobby_schedule SET open = false WHERE lobby_id LIKE 'pt-ml-pa-%';
  -- leave pt-ml-pa with only outbound edges (this way, we can still calculate its immediate neighbors)
  DELETE FROM connection WHERE from_station = 'pt-ml-ss' AND to_station = 'pt-ml-pa';
  DELETE FROM connection WHERE from_station = 'pt-ml-mp' AND to_station = 'pt-ml-pa';
  -- connect pt-ml-ss directly to pt-ml-mp
  INSERT INTO connection VALUES ('pt-ml-ss', 'pt-ml-mp', 0, 0, 0, 0), ('pt-ml-mp', 'pt-ml-ss', 0, 0, 0, 0);
  UPDATE dataset_info SET version = now() WHERE network_id = 'pt-ml';
  COMMIT;