Incorrect relation keys

[ddrv]

What steps will reproduce the problem?

My script:

/path/to/countries.csv

id,country_code,country_name
1,Au,Australia
2,Cn,China
3,De,Germany
4,Kz,Kazakhstan

/path/to/cities.csv

id,name,country,latitude,longitude
1,Sidney,1,-33.8699,151.2082
2,Astana,4,51.1271,71.4884
3,Berlin,3,52.5106,13.4383
4,Almaty,4,43.2427,76.9548
5,Ust-Kamenogorsk,4,49.9075,82.6213

/path/to/networks.csv

first_ip,last_ip,city
"1.0.0.0","1.255.255.255",1
"2.0.0.0","2.255.255.255",2
"3.0.0.0","3.255.255.255",3
"4.0.0.0","4.255.255.255",4
"5.0.0.0","5.255.255.255",5

script.php

<?php
require_once('vendor/autoload.php');
$countries = (new Register('/path/to/countries.csv'))
    ->setCsv('UTF-8')
    ->setFirstRow(2)
    ->setId(1)
    ->addField('code', 2, new StringField(StringField::TRANSFORM_LOWER, 2))
    ->addField('name', 3, new StringField())
;
$cities = (new Register('/path/to/cities.csv'))
    ->setCsv('UTF-8')
    ->setFirstRow(2)
    ->setId(1)
    ->addField('name', 2, new StringField(0))
    ->addField('countryId', 3, new NumericField(0))
    ->addField('latitude', 4, new LatitudeField())
    ->addField('longitude', 5, new LongitudeField())
;
$network = (new Network('/path/to/networks.csv', Network::IP_TYPE_ADDRESS, 1, 2))
    ->setCsv('UTF-8')
    ->setFirstRow(2)
;

$wizard = (new Wizard('/path/to/tmp'))
    ->setAuthor('Ipstack wizard')
    ->setTime(time())
    ->setLicense('WTFPL')
    ->addRegister('city', $cities)
    ->addRegister('country', $countries)
    ->addRelation('city', 'countryId', 'country')
    ->addNetwork(
        $network,
        array(
            3 => 'city',
        )
    )
;
$wizard->compile('ipstack.dat');

$finder = new Finder('ipstack.dat');
$finder->getRegister('country');
$finder->getRegister('city');

What is the expected result?

Array
(
...
    [3] => Array
        (
            [code] => de
            [name] => Germany
        )
...
)

Array
(
    ...
    [3] => Array
        (
            [name] => Berlin
            [countryId] => 3
            [latitude] => 52.510601043701
            [longitude] => 13.438300132751
        )
    ....
)

What do you get instead?

Array
(
...
    [3] => Array
        (
            [code] => kz
            [name] => Kazakhstan
        )
...
)

Array
(
    ...
    [3] => Array
        (
            [name] => Berlin
            [countryId] => 3
            [latitude] => 52.510601043701
            [longitude] => 13.438300132751
        )
    ....
)

Berlin is not in Kazakhstan!

Additional info

Q	A
Wizard version	2.0.0
PHP version	7.0
Operating system	Linux mint