This tiny plugin simply adds the Wordpress Password Encoder to Shopware 6 and thus allows you to import your existing WooCommerce customers into Shopware without loosing their passwords or having them reset their passwords. This plugin has been written to import CSV files created with the Shopware 6 Exporter for WooCommerce Wordpress-Plugin.
composer require vardumper/wordpress-password-encoder-for-shopware-six
bin/console plugin:refresh
bin/console plugin:install WordpressPasswordEncoder
bin/console plugin:activate WordpressPasswordEncoder
Alternatively download the zip and install in the Shopware Backend.