title: gatsby-plugin-google-analytics + Shopify - Conversions not working
body: <p>I have a Gatsby site sourcing from Shopify, and I'm having a hard time getting the Acquisition Conversions working.</p>
  <p>My guess is that when they go to the Checkout page, since it's on Shopify's domain, it sees that as Direct traffic.</p>
  <p>My current configuration is:</p>
  <pre><code>{
    resolve: `gatsby-plugin-google-analytics`,
    options: {
      trackingId: &quot;...&quot;,
      head: true,
      anonymize: false,
      respectDNT: false,
      allowLinker: true,
    },
  },
  </code></pre>
  <p>I just added that <code>allowLinker</code> in to test today.  Is there anything else I'm missing?  I'm not too familiar with analytics I'm just a humble javascript farmer.</p>
  <p>Thank you</p>