title: Dynamics Nav (Navision) webservice ReadMultiple date filter
body: <p>Using the Navision webservices, how can you filter by a date.</p>
  
  <p>i.e. Within a SalesHeader table there is an "ExportedDate". I would like to find all SalesHeaders where the ExportedDate has not been set or were exported on a particular date.</p>
  
  <p>It seems that whenever we set a filter on a date field, then the webservice will either return all rows or no rows.</p>