title: How to update an SVN branch made with svn-copy?
body: <p>noob question I know, but all resources I found fail or gave me the new problem.</p>
  
  <p>I have few branches in my SVN repo. All developers get access to his personal branch. Each branch was made by a copy from the beta branch.</p>
  
  <pre><code>svn copy  svn://192.168.0.2/svn/example/branches/beta
  svn://192.168.0.2/svn/example/branches/dev/devN
  </code></pre>
  
  <p>Now when dev1 finished to work, he merge his work in beta (pwd = ./beta/)</p>
  
  <pre><code>svn merge svn://192.168.0.2/svn/example/branches/dev/dev1@4242 .
  </code></pre>
  
  <p>Well, my question is, how other dev could update her own branch to the latest beta with dev1 change?</p>
  
  <p>when dev2 do a merge (after commited his own change | pwd = ./dev/dev2)</p>
  
  <pre><code>svn merge svn://192.168.0.2/svn/example/branches/beta@4242 .
  </code></pre>
  
  <p>He get this message:</p>
  
  <pre><code>svn: E195016: Merge tracking not allowed with missing subtrees; try restoring these items first:
  pointing his files. -&gt; impossible to merge.
  </code></pre>
  
  <p>Is there a way to "update" a branch copy?</p>