Missing `division_area`s for major cities

Hey!

I noticed that many large cities (subtype=locality) are present in the division dataset but have no related entry in division_area:

SELECT
  divisions.id,
  divisions.names.primary,
  divisions.country as country_code,
  divisions.population
FROM
  `bigquery-public-data.overture_maps.division` as divisions
WHERE
  divisions.subtype = 'locality' AND
  divisions.population >= 100000 AND
  NOT EXISTS (
    SELECT 1
    FROM `bigquery-public-data.overture_maps.division_area` as areas
    WHERE divisions.id = areas.division_id
  )
ORDER BY
  divisions.population DESC

This returns 3872 rows, including Beijing, Tokyo, Istanbul, or Berlin.

Many of those city boundaries exist on https://whosonfirst.org. Could we add their data sources to Overture?

Thank you!!