They belong to that world.

(from Miss Buckton's notes, revised by 'Abdu'l-Baha).
Intercourse with spirits of the departed ought not to be sought for its own sake, nor in order to gratify idle curiosity.

It is both a privilege and duty, however, for those on one side of the veil to love and help and pray for those on the other.

Prayers for the dead are enjoined on Baha'is.
'Abdu'l-Baha said to Miss E.J.Rosenberg in 1904: "The grace of effective intercession is one of the perfections belonging to advanced souls, as well as to the Manifestation of God.

Jesus Christ had the power of interceding for the forgiveness of His enemies when on earth, and He certainly has this power now.