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wp-content
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plugins
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mailchimp-for-wp
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includes
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admin
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migrations
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3.0.0-general-options.php
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<?php defined('ABSPATH') or exit; // transfer option $options = (array) get_option('mc4wp_lite', array()); // merge options, with Pro options taking precedence $pro_options = (array) get_option('mc4wp', array()); $options = array_merge($options, $pro_options); // update options update_option('mc4wp', $options); // delete old option delete_option('mc4wp_lite');