title: How to rebuild solr index using core reload
body: <p>I need to update my Solr schema frequently for testing search relevancy in my application. <a href="https://wiki.apache.org/solr/FAQ#How_can_I_rebuild_my_index_from_scratch_if_I_change_my_schema.3F" rel="nofollow">This article</a> says: </p>
  
  <blockquote>
    <p>One can also delete all documents, change the schema.xml file, and
    then reload the core w/o shutting down Solr.</p>
  </blockquote>
  
  <p>When I added a copyfield and followed the same approach, the changes do not reflect. Am I missing anything? </p>