title: Morphia datastore.save() behaviour
body: <p>We hare using morphia 0.109 to insert records, using the following syntax:</p>
  
  <pre><code>AdvancedDatastore datastore = MongoDbFactory.getDatastore();
  datastore.save(collectionName, pojo);
  </code></pre>
  
  <p>It appears that when the object does not exist yet in mongodb morphia first issues a delete and then an insert request? </p>
  
  <p>Is the only way to get arround this to specifically use the <strong>.insert</strong> and <strong>.update</strong> methods in java instead of <strong>.save</strong>?</p>
  
  <p><img src="https://i.stack.imgur.com/vopoQ.png" alt="enter image description here"></p>