Integer iDurationColumnIndex = null;
//Find the Salience and Duration column indexes
List<BaseColumn> allColumns = destination.getExpandedColumns();
for ( int iCol = 0; iCol < allColumns.size(); iCol++ ) {
final BaseColumn column = allColumns.get( iCol );
if ( column instanceof AttributeCol52 ) {
AttributeCol52 attributeCol = (AttributeCol52) column;
final String attributeName = attributeCol.getAttribute();
if ( GuidedDecisionTable52.SALIENCE_ATTR.equals( attributeName ) ) {
iSalienceColumnIndex = iCol;