SQL Users, Roles and permissions Migration - sql-server-2008

Question

Are there any scripts available to migrate SQL Server users from SQL Server 2008 to SQL Server 2008 R2 along with the User Mappings, Roles and permissions please?
I am following
https://support.microsoft.com/en-us/help/918992/how-to-transfer-logins-and-passwords-between-instances-of-sql-server
But the instructions in that link just assists in migrating the users.
The user mappings, roles and permissions don't get migrated.
Apologies if such question was already answered.
I had a quick search, but could not find a solution to my issue.
Thanks

Answer 1

Does this work?
/****** Object: StoredProcedure [dbo].[usp_get_object_permissions] Script Date: 10/07/2011 14:28:21 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- run this script from the user database
--exec usp_get_object_permissions
--drop proc usp_get_object_permissions
--go
CREATE PROCEDURE [dbo].[usp_get_object_permissions]
AS
set nocount on
set quoted_identifier off
declare #as_ObjectName sysname
set #as_ObjectName = NULL
--database owner info
select 'alter authorization on database::['+db_name()+'] to ['+ suser_sname(owner_sid)+']'
AS '--owner of database when script was created'
from master.sys.databases where name = db_name()
--drop and recreate users
select '-- It is not always necessary to drop and recreate the users it will depend on the circumstances under which you need to run this script'
select 'drop user [' + name + ']' from sys.database_principals
where principal_id > 4 and owning_principal_id is NULL
and type != 'A'
order by name
select 'CREATE USER [' + dp.name collate database_default + '] FOR LOGIN [' + sp.name + ']'+
case dp.type
when 'G' then ' '
else
' WITH DEFAULT_SCHEMA=['+dp.default_schema_name + ']'
end
as '-- by default Orphaned users will not be recreated'
from sys.server_principals sp
inner join sys.database_principals dp on dp.sid = sp.sid
where dp.principal_id > 4 and dp.owning_principal_id is NULL and sp.name <> ''
order by dp.name
-- Recreate the User defined roles
select '-- server created roles should be added by the correct processes'
select 'CREATE ROLE ['+ name + '] AUTHORIZATION ['+USER_NAME(owning_principal_id)+']'
from     sys.database_principals
    where name != 'public' and type = 'R' and is_fixed_role = 0
-- recreate application roles
select 'CREATE APPLICATION ROLE ['+ name + '] with password = '+QUOTENAME('insertpwdhere','''')+' ,default_schema = ['+default_schema_name+']'
from     sys.database_principals
    where type = 'A'
-- ADD ROLE MEMBERS
SELECT 'EXEC sp_addrolemember [' + dp.name + '], [' + USER_NAME(drm.member_principal_id) + '] ' AS [-- AddRolemembers]
FROM sys.database_role_members drm
INNER JOIN sys.database_principals dp ON dp.principal_id = drm.role_principal_id
where USER_NAME(drm.member_principal_id) != 'dbo'
order by drm.role_principal_id
-- CREATE GRANT Object PERMISSIONS SCRIPT
SELECT replace(state_desc,'_with_grant_option','') + ' '+ permission_name + ' ON ['
+ OBJECT_SCHEMA_NAME(major_id) + '].[' + OBJECT_NAME(major_id) + ']'+
case minor_id
when 0 then ' '
else
' (['+col_name(sys.database_permissions.major_Id, sys.database_permissions.minor_id) + '])'
end
+' TO [' + USER_NAME(grantee_principal_id)+']' +
case
when state_desc like '%with_grant_option' then ' with grant option'
else
' '
end
as '-- object/column permissions'
FROM sys.database_permissions (NOLOCK)
WHERE class not in (0,3) and major_id = ISNULL(OBJECT_ID(#as_ObjectName), major_id)
--AND OBJECT_SCHEMA_NAME(major_id) != 'SYS'
ORDER BY USER_NAME(grantee_principal_id),OBJECT_SCHEMA_NAME(major_id), OBJECT_NAME(major_id)
--SCHEMA permissions
SELECT replace(state_desc,'_with_grant_option','') + ' '+ permission_name + ' ON SCHEMA::['
+ SCHEMA_NAME(major_id) + ']'+
+' TO [' + USER_NAME(grantee_principal_id)+']' +
case
when state_desc like '%with_grant_option' then ' with grant option'
else
' '
end
as '-- Schema permissions'
FROM sys.database_permissions (NOLOCK)
WHERE class_desc = 'SCHEMA'
ORDER BY USER_NAME(grantee_principal_id),SCHEMA_NAME(major_id)
SELECT replace(state_desc,'_with_grant_option','') + ' '+ permission_name +
' TO [' + USER_NAME(grantee_principal_id)+']' +
case
when state_desc like '%with_grant_option' then ' with grant option'
else
' '
end
FROM sys.database_permissions (NOLOCK)
WHERE permission_name = 'VIEW DEFINITION' and class_desc = 'database'
ORDER BY USER_NAME(grantee_principal_id)