Reporting Services :: Employee Not Showing Under Correct Manager

I have been using this query inside the package that I created to load data into cube. From this cube I am fetching records for my cascaded parameterized report. The issue here is one of the employee is showing under different team manager and site manager. This team manager has left the company and now the employee is back to its previous team manager. here is the code:

Truncate table CallCenterEmployee.dbo.tblCube_Staff;
GO
Insert Into CallCenterEmployee.dbo.tblCube_Staff
SELECT     dbo.tblStaff.Emp_N
, CONVERT(varchar, dbo.tblStaff.Emp_N) + CONVERT(varchar, tblDate.ID) AS SurrogateKey
, dbo.tblStaff.StaffId
, dbo.tblStaff.First_M
, dbo.tblStaff.Last_M

[code]...