title: Add a CSV content to another CSV
body: <p>I have two CSV files, both have same header:</p>
  
  <pre><code>ID,Relation,First Name,Last Name,Email Address,Office,Phone,Photos
  </code></pre>
  
  <p>I'm trying to make a PowerShell scrip to copy 2nd csv file at the end of the first, without the header. </p>
  
  <p>Is there a way to eliminate duplicate records based on a certain column, after I added the two together?</p>