Any individual appointed prior to the effective date of this chapter as a humane society police officer in the county of the registered office of the society or association for which the individual was previously appointed shall not be required to apply for appointment by the court of common pleas in that county under this chapter. Such individual shall be required to apply for appointment pursuant to section 3704 (relating to appointment by nonprofit corporations) in each county other than the initial county of appointment if directed by the society or association.