>boolean</code>)</span></dt><dd><p>
          Specifies whether to copy pre-existing data in the publications
          that are being subscribed to when the replication starts.
          The default is <code class="literal">true</code>.
         </p><p>
          Previously subscribed tables are not copied, even if a table's row
          filter <code class="literal">WHERE</code> clause has since been modified.
         </p><p>
          See <a class="xref" href="sql-createsubscription.html#SQL-CREATESUBSC