Facing a Problem in Substitute a User in PRD system

Dear All,

I am facing a problem in User substitution in Business Workplace(SBWP), the following problem is occurring for four different user and they are falling under Three different categories in the same system.

Problem:

User_1 is taken leave for two days from 05-May to 06-May, then substitute for User_1 is assigned to User_2 for these two days, but the problem is after two days also the User_2 receiving the emails. I cross verified the table 'HRUS_D2' also, the date matches 05-May to 06-May for user 'USER_1'.

Category 1:

In PA000-STAT2 Field for the User 'USER_1', It is showing as Inactive.

Category 2:

In PA000-STAT2 Field for the User 'USER_1', It is showing that the User is currently active but after 31-May, the User Withdrawn the Job.

Category 3:

In PA000-STAT2 Field for the User 'USER_1', It is showing that the user is currently active.

All the above problem is occurring in Production system.