Bug 167545 Copy a cascading parameter group and paste it to another parameter group causes an exception thrown
Steps to reproduce: 1.Copy a cascading parameter group using short cut key "Ctrl+x"/"Ctrl+c", or choosing context menu "Cut"/"Copy"; 2.Paste it to another parameter group using short cut key "Ctrl+v", or choosing context menu "Paste"; Expected result: The source one is pasted in the destination. Actual result: An exception thrown org.eclipse.birt.report.model.api.command.ContentException: The Cascading Parameter Group("Source") is not allowed in the slot (parameters) of Parameter Group("Destination").
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
}
	public static Date convertToDate( String xmlString ) throws ParseException
	{
		if ( StringUtil.isBlank( xmlString ) )
		{
			return null;
		}
		String pattern = null;
		if ( xmlString.indexOf( 'T' ) != -1 )
		{
			if ( xmlString.indexOf( '.' ) != -1 )
			{
				pattern = XMLDATE_PATTERN_FULL;
			}
			else if ( xmlString.indexOf( ':' ) == xmlString.lastIndexOf( ':' ) )
			{
				pattern = XMLDATE_PATTERN_WITH_OUT_SECOND;
			}
			else
			{
				pattern = XMLDATE_PATTERN_WITH_OUT_MILLISECOND;
			}
		}
		else
		{
			pattern = XMLDATE_PATTERN_DATE_ONLY;
		}
		DateFormatter formater = new DateFormatter( pattern );
		return formater.parse( xmlString );
	}