Kaihatsu-ryoshu also concurrently performed as Zaichokanjin (provincial government officers) and they remained in the Kokugaryo position when the relation with kokuga was more profitable.
また、開発領主は、一方では在庁官人でもあり、国衙と結びつくことが有利な場合はそのまま国衙領にとどまった。