Managing out

"Maam, it's done.
He will be transferred to x dept by 1st of March."

Somehow.... deep inside me, I feel sad.
I dont understand at first and need to digest it and describe how actually I feel.

I should feel relieved, right? Managing a person out of my department and have him transferred properly.

But, how come I dont feel so good about it.
I didnt feel good when we have to issue 3rd warning letter, even the idea of warning letter make me nausea.