title: how to copy data in following case
body: <p>I have 2 objects, one is linked to datacontext, second is not. I need to copy full data from second to first. How to do it? If I try just</p>
  
  <pre><code>obj1 = obj2;
  </code></pre>
  
  <p>I got error about EntityDataContext is not attached</p>