title: Cognos 10.2.1 to_date function
body: <p>Report Studio Reports are recently migrated from Cognos 8.4.1 to Cognos 10.2.1.In cognos 10, to_date(timestamp) function is not working which was perfectly working in cognos 8.4.1. Any report which got following expression in the filter are failing in Cognos 10 but works fine in Cognos 8.</p>
  
  <pre><code>to_date(trunc([Presentation Layer].[Query Subject].[FROM_DATE])) &gt;= ?fromDate?
  </code></pre>
  
  <p>FROM_DATE = date from data source(Oracle) which is of type timstamp
  fromDate = is a report parameter passed in the query string</p>
  
  <p>Can some one please advise the fix/work around on this issues. We are talking about several reports that got this issue.</p>