title: mongoimport rejects NumberDecimal types
body: <p>Mongodb from v.3.4 supports <a href="https://docs.mongodb.com/manual/core/shell-types/#numberdecimal" rel="nofollow noreferrer">NumberDecimal</a></p>
  
  <p>I have MongoDB server version: <strong>3.4.1</strong>, but when I execute <strong>mongoimport</strong> shell command I get an error:</p>
  
  <blockquote>
    <p>Failed: error processing document #7: invalid character 'D' in literal NumberInt or NumberLong (expecting 'I' or 'L')</p>
  </blockquote>
  
  <p><br> My json:</p>
  
  <pre><code>{"c":"7E474601-B511-4AD9-B2B8-7E61807F9673","n":"n1","v":NumberDecimal("95")}
  </code></pre>
  
  <p>Normal insert executes ok, so this is mongoimort problem.</p>
  
  <pre><code>db.aaa.insert({"c":"7E474601-B511-4AD9-B2B8-7E61807F9673","n":"n1","v":NumberDecimal("95")})
  WriteResult({ "nInserted" : 1 })
  </code></pre>
  
  <p>Why is that? Can you help me?</p>