title: Firebase export to BigQuery not populating traffic_source.name (campaign name) starting Feb 10th
body: <p>We noticed an issue across all our projects starting Feb 10th where the <code>first_open</code> event contains an empty campaign name (<code>traffic_source.name</code> column). The <code>traffic_source.source</code> and <code>traffic_source.medium</code> columns contain the right values indicating the users are from Google Ads campaigns (<code>google</code> and <code>cpc</code> respectively).</p>
  <p>Following is the BigQuery select (just replace the {project} and {ID}):</p>
  <pre><code>SELECT event_date, traffic_source.source, traffic_source.medium, traffic_source.name, count(*)
  FROM `{PROJECT}.analytics_{ID}.events_202202*`
   WHERE event_name = 'first_open' AND traffic_source.medium = 'cpc' and traffic_source.name IS NULL
   group by 1,2,3,4
   order by 1,2,3,4
  </code></pre>
  <p>I've checked the first_open attribution on Firebase console and it seems to be fine. We suspect the issue is related to the export to BigQuery only.</p>
  <p>Does anyone else notice this?</p>