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
if ( isNew )
			{
				return ( (TableHandle) parent ).canInsertAndPasteColumn( transferData,
						columnNumber );
			}
			return ( (TableHandle) parent ).canPasteColumn( transferData,
					columnNumber,
					true );
		}
		else if ( parent instanceof GridHandle )
		{
			if ( isNew )
			{
				return ( (GridHandle) parent ).canInsertAndPasteColumn( transferData,
						columnNumber );
			}
			return ( (GridHandle) parent ).canPasteColumn( transferData,
					columnNumber,
					true );
		}
		return false;
	}
	protected static int handleValidateTargetCanContainByContainer(
			Object targetObj, DesignElementHandle childHandle,
			boolean validateContainer )
	{
		targetObj = unwrapToModel( targetObj );
		if ( targetObj instanceof DesignElementHandle )
		{
			return handleValidateTargetCanContainElementHandle( (DesignElementHandle) targetObj,