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
&& ( (ColumnHandle) array[0] ).getRoot( ) != null )
			{
				boolean bool = false;
				int columnNumber = HandleAdapterFactory.getInstance( )
						.getColumnHandleAdapter( array[0] )
						.getColumnNumber( );
				Object parent = ( (ColumnHandle) array[0] ).getContainer( );
				if ( parent instanceof TableHandle )
				{
					bool = ( (TableHandle) parent ).canCopyColumn( columnNumber );
				}
				else if ( parent instanceof GridHandle )
				{
					bool = ( (GridHandle) parent ).canCopyColumn( columnNumber );
				}
				if ( bool && array.length == 1 )
				{
					return true;
				}
				if ( bool && array[1] instanceof CellHandle )
				{
					return true;
				}
				return false;
			}
			for ( int i = 0; i < array.length; i++ )
			{
				if ( checkContainerExists( array[i], array ) )
					continue;
				if ( !handleValidateDragInOutline( array[i] ) )