Date Conversion problems

BEGIN
declare @g datetime
Declare @sDate as datetime
Declare @eDate as datetime
Declare @rCnt as int
set nocount on
set @g = getdate()

INSERT INTO P_Dates (StartDate, EndDate, Result, RunDate)
SELECT StartDate, EndDate, Result, REPLACE(REPLACE(Convert(nvarchar (8), getdate(), 112), '-', ' '), ' ', '')
FROM udf_Date(@g) AS g

Set @sDate = (SELECT DISTINCT REPLACE(REPLACE(CONVERT(nvarchar (8), StartDate, 112), ' ', ''), '-', ' ')
                        FROM P_Dates
                        Where Rundate = REPLACE(REPLACE(CONVERT(VARCHAR(8), getdate(), 112),'-',''),' ',''))
print @sDate

Set @eDate = (SELECT DISTINCT REPLACE(REPLACE(CONVERT(nvarchar (8), EndDate, 112), ' ', ''), '-', ' ')
                        FROM P_Dates
                        Where Rundate = REPLACE(REPLACE(CONVERT(VARCHAR(8), getdate(), 112),'-',''),' ',''))
print @eDate

      SET @rCnt = (SELECT Count(ACCTNO)
                  FROM IMPORT)
            
      Update P_Dates
      SET RecCount = @rCnt,
       StartDate = REPLACE(REPLACE(CONVERT(varchar(8), StartDate, 112),'/',''),' ',''),
       EndDate = REPLACE(REPLACE(CONVERT(varchar(8), EndDate, 112),'/',''),' ','')
      Where @sDate = StartDate AND @eDate = EndDate

END
StartDate                  EndDate                      RunDate
5/3/2008 12:00:00 AM      5/9/2008 12:00:00 AM      848      1      20080619      Today is not Sunday
NULL      NULL      NULL      NULL      NULL      NULL

P_Dates (file layout).
      [StartDate] [datetime] NULL,
      [EndDate] [datetime] NULL,
      [RecCount] [int] NULL,
      [RECID] [numeric](18, 0) IDENTITY(1,1) NOT NULL,
      [RunDate] [nvarchar](8) NULL,
      [Result] [nvarchar](100) NULL,

StartDate and EndDate should look like RunDate. I have tried everything to convert them what am I missing
When I print them after command Set @sDate = I get May  3 2008 12:00AM
May  9 2008 12:00AM. What is going on???

Thanks,
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