title: How do Import products with categories from csv in magento 1.5
body: <p>I am trying to import products into various categories from a csv.
  to get the format for the csv I have exported an existing product, there is a column with the heading _category, however the only category id listed is 0. </p>
  
  <p>I have put the correct category ID in the csv for upload, however on import it complains that the category doesn't exist.</p>
  
  <p>is there anything likely to cause this?</p>
  
  <p>Below is the dataflow actions XML, is there anything i should be putting in here to make sure the category is exported/imported?</p>
  
  <pre><code>&lt;action type="dataflow/convert_parser_csv" method="parse"&gt;
      &lt;var name="delimiter"&gt;&lt;![CDATA[,]]&gt;&lt;/var&gt;
      &lt;var name="enclose"&gt;&lt;![CDATA["]]&gt;&lt;/var&gt;
      &lt;var name="fieldnames"&gt;true&lt;/var&gt;
      &lt;var name="store"&gt;&lt;![CDATA[1]]&gt;&lt;/var&gt;
      &lt;var name="number_of_records"&gt;1&lt;/var&gt;
      &lt;var name="decimal_separator"&gt;&lt;![CDATA[.]]&gt;&lt;/var&gt;
      &lt;var name="adapter"&gt;catalog/convert_adapter_product&lt;/var&gt;
      &lt;var name="method"&gt;parse&lt;/var&gt;
  &lt;/action&gt;
  </code></pre>