Bug 167542 A parameter group isn't deleted after moving it to another parameter group through DND
Drag a parameter group and drop it to another one is a "move" operation, which cuts the source and pastes to the destination. But the source one isn't deleted in such operation while the parameters in the group are all deleted.
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DNDUtil.java
EmbeddedImage image ) throws SemanticException
	{
		if ( container instanceof EmbeddedImageNode )
		{
			container = ( (EmbeddedImageNode) container ).getReportDesignHandle( );
		}
		try
		{
			( (ModuleHandle) container ).rename( image );
			( (ModuleHandle) container ).addImage( image );
		}
		catch ( SemanticException e )
		{
			e.printStackTrace( );
		}
	}
	/**
	 * Validates target elements can contain transfer data
	 * 
	 * @param targetObj
	 *            target elements
	 * @param transferData
	 *            transfer data,single object or array are permitted
	 * @return if target elements can be dropped
	 */
	public static boolean handleValidateTargetCanContain( Object targetObj,
			Object transferData )
	{
		return handleValidateTargetCanContain( targetObj, transferData, true ) != CONTAIN_NO;
	}