title: IOS campaigns from Dynamic Links are not seen in BigQuery
body: <p>The problem is that we see very little amount referrer campaigns from the iOS in BigQuery. The expected number should be x100 times more. And Android campaign numbers are correct.</p>
  
  <p>We are using <code>flutter v1.1.1+64</code> and the <code>firebase_dynamic_links v0.2.0+3</code> flutter library for tracking.</p>
  
  <p>Dynamic Links have App Store campaign configured (<code>pt</code>, <code>ct</code> and <code>mt</code> parameters) and we can see these campaigns in the iTunes Connect.</p>
  
  <p>In BigQuery I'm looking at the <code>traffic_source.*</code> columns and also at <code>firebase_campaign</code> events.</p>
  
  <ul>
  <li>Where the problem can be?</li>
  <li>How do IOS Dynamic Links work under the hood?</li>
  <li>Are there any ways of debugging on which step the problem is?</li>
  </ul>