ile array.
	 *
	 * The 4.9.6 sensitive-options migration unset these on the raw DB option, but the
	 * in-memory InternalOptions model (already loaded at boot) re-saved them on shutdown
	 * because `searchStatistics.profile` was a generic `array` leaf — its inner keys
	 * weren't filtered against the schema. The schema is now structured, so a forced
	 * save strips legacy subkeys automatically; backfill sensitive options first in case
	 * the prior migration missed them.
	 *
	 * @since 4.9.7
	 *
	 * @return void
	 */
	private function cleanupSearchStatisticsProfile() {
		$rawInternalOptions = json_decode( (string) get_option( 'aioseo_options_internal', '' ), true );
		$profile            = is_array( $rawInternalOptions )
			? aioseo()->helpers->getNestedValue( $rawInternalOptions, [ 'internal', 'searchStatistics', 'profile' ] )
			: null;

		if ( is_array( $profile ) ) {
			if ( ! empty( $profile['key'] ) && is_string( $profile['key'] ) && ! aioseo()->sensitiveOptions->hasValue( 'searchStatisticsProfileKey' ) ) {
				aioseo()->sensitiveOptions->set( 'searchStatisticsProfileKey', $profile['key'] );
			}
			if ( ! empty( $profile['token'] ) && is_string( $profile['token'] ) && ! aioseo()->sensitiveOptions->hasValue( 'searchStatisticsProfileToken' ) ) {
				aioseo()->sensitiveOptions->set( 'searchStatisticsProfileToken', $profile['token'] );
			}
			aioseo()->sensitiveOptions->save( true );
		}

		// Force-save internal options so the structured `profile` schema strips legacy subkeys.
		aioseo()->internalOptions->save( true );
	}

	/**
	 * Unsets a nested value in an array by path.
	 *
	 * @since 4.9.6
	 *
	 * @param  array $array The array to modify (passed by reference).
	 * @param  array $path  The path to the value.
	 * @return void
	 */
	private function unsetNestedValue( &$array, $path ) {
		$lastKey = array_pop( $path );
		$current = &$array;
		foreach ( $path as $key ) {
			if ( ! isset( $current[ $key ] ) || ! is_array( $current[ $key ] ) ) {
				return;
			}
			$current = &$current[ $key ];
		}

		unset( $current[ $lastKey ] );
	}
}