Bug 136833 Group key is affected by Generate All button in group.
Description: Group key is affected by Generate All button in group. Steps to reproduce: 1. Insert a list 2. Add a group, select a group key, then click Generate All button. Actual result: Group key disappeared, you have to reset it.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
inputGroup.setName( nameEditor.getText( ) );
			String newToc = UIUtil.convertToModelString( tocEditor.getText( ),
					true );
			if ( newToc != inputGroup.getTocExpression( ) )
			{
				if ( newToc == null
						|| !newToc.equals( inputGroup.getTocExpression( ) ) )
				{
					inputGroup.setTocExpression( newToc );
				}
			}
			int index = keyChooser.getSelectionIndex( );
			String oldKeyExpr = inputGroup.getKeyExpr( );
			String newKeyExpr = getKeyExpression( );
			inputGroup.setKeyExpr( newKeyExpr );
			if ( newKeyExpr != null
					&& newKeyExpr.length( ) != 0
					&& !newKeyExpr.equals( oldKeyExpr )
					&& index != -1 )
			{
				SlotHandle slotHandle = null;
				
				if ( inputGroup instanceof ListGroupHandle )
				{
					slotHandle = inputGroup.getHeader( );
					
					
				}
				else if ( inputGroup instanceof TableGroupHandle )
				{