Update the Audit Table with an update Trigger

[manmaria]

I have a base table and audit table are like this
SET QUOTED_IDENTIFIER ON
GO

SET ANSI_PADDING ON
GO

CREATE TABLE [dbo].[Mytest](
[TestID] Int NOT NULL,
[TestDesc] [varchar](35) NOT NULL,

[EffBegDate] [datetime] NOT NULL,

[EffEndDate] [datetime] NOT NULL,

PRIMARY KEY CLUSTERED
(
[TestId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

GO

and the same kind for my audit.

INSERT INTO MyTest (
TestId,TestDesc,EffBegDate,EffEndDate
)

Values (1,'test',getdate(), getdate());

INSERT INTO MyTest (
TestId,TestDesc,EffBegDate,EffEndDate
)

Values (2,'test2','20080101', '99991231');

Have an update trigger like this
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
create TRIGGER MyTest_update

ON MyTest

for update
as
BEGIN

INSERT INTO Audit_MyTest (
TestId,TestDesc,EffBegDate,EffEndDate
)

-- Values (1,'test',getdate(), getdate())
(select
TestId,TestDesc,EffBegDate,EffEnddate from Inserted)

END;


Update

Update Mytest
set TestDesc='test2_updt'
where testid=2;


But what I want is when ever there is an update on the base table, I want to insert into the audit table with effenddate as the effbegdate of the base table record.

How do I do this?

TIA