How to add header comments when altering stored procedures in SQL Server

Question

I have a stored procedure where there are no header comments. I want to add them, but whenever I try, it is not included.

In SQL Server Management Studio I :

1.Right-click my stored procedure and click modify

USE [ABigDB]
GO
/****** Object:  StoredProcedure [dbo].[spDoWork]    Script Date: 21/08/2015 14:11:45 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[spDoWork]
      @Id uniqueidentifier,
      @Session nvarchar(50),
      @XMLData xml
WITH EXECUTE AS OWNER
AS
BEGIN
--etc etc...
END

2.I paste comments above the stored procedure and run the script :

-- Stored Procedure
--    Author:           Dave
--    Create date:      21/08/2015
--    Description:      Does Stuff      
--  Change history
--      07/08/2015  - Overlord - Done stuff
--      06/08/2015  - Kerrigan - Done more stuff
USE [ABigDB]
GO
/****** Object:  StoredProcedure [dbo].[spDoWork]    Script Date: 21/08/2015 14:11:45 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[spDoWork]
      @Id uniqueidentifier,
      @Session nvarchar(50),
      @XMLData xml
WITH EXECUTE AS OWNER
AS
BEGIN
--etc etc...
END

3.When I modify the same stored procedure it appears as :

USE [ABigDB]
GO
/****** Object:  StoredProcedure [dbo].[spDoWork]    Script Date: 21/08/2015 14:11:45 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[spDoWork]
      @Id uniqueidentifier,
      @Session nvarchar(50),
      @XMLData xml
WITH EXECUTE AS OWNER
AS
BEGIN
--etc etc...
END

So how do I get the comments to appear there?

Answer 1

I solved it by doing the following:

USE [ABigDB]
GO
/****** Object:  StoredProcedure [dbo].[spDoWork]    Script Date: 21/08/2015 14:11:45 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

-- Stored Procedure
--    Author:           Dave
--    Create date:      21/08/2015
--    Description:      Does Stuff      
--  Change history
--      07/08/2015  - Overlord - Done stuff
--      06/08/2015  - Kerrigan - Done more stuff

ALTER PROCEDURE [dbo].[spDoWork]
      @Id uniqueidentifier,
      @Session nvarchar(50),
      @XMLData xml
WITH EXECUTE AS OWNER
AS
BEGIN
--etc etc...
END