In ConfgWrite values nested in arrays are not set
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3561467. -->
Reported by: [xenophyle](https://www.drupal.org/user/664428)
Related to !575
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>@pameela came across this and reported it in <span class="drupalorg-gitlab-issue-link project-issue-status-info project-issue-status-7"><a href="https://www.drupal.org/project/mailchimp/issues/3556475" title="Status: Closed (fixed)">#3556475: When Mailchimp Signup Forms recipe is applied, signup form entity is created but no audience selected</a></span>.</p>
<p>The initial signup block config is created, but it does not get updated with the audience or merge data.</p>
<h4 id="summary-steps-reproduce">Steps to reproduce</h4>
<p>The ddev instructions are in <span class="drupalorg-gitlab-issue-link project-issue-status-info project-issue-status-7"><a href="https://www.drupal.org/project/mailchimp/issues/3556475" title="Status: Closed (fixed)">#3556475: When Mailchimp Signup Forms recipe is applied, signup form entity is created but no audience selected</a></span>.</p>
<p>Otherwise</p>
<ul>
<li><code>composer create-project drupal/cms:2.0.0-alpha2</code></li>
<li>(you may need to edit composer to allow minimum-stability=dev, then <code>composer install</code>)</li>
<li><code>composer require drupal/mailchimp_signup_forms -W</code></li>
<li>visit the site; follow setup steps, using select Byte as the template</li>
<li>install Mailchimp Signup Forms from the project browser</li>
<li>authenticate</li>
<li>the signup forms are created but do not have an audience</li>
</ul>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<p>I will submit a MR</p>
<h3 id="summary-remaining-tasks">Remaining tasks</h3>
<h3 id="summary-ui-changes">User interface changes</h3>
<h3 id="summary-api-changes">API changes</h3>
<h3 id="summary-data-model-changes">Data model changes</h3>
issue