Change in Line Manager - Question it?

Hi, I was informed by my line manager that, due to increased responsibilities and a promotion, he would be reducing the number of his direct reports. However, I understand that I was the only one transferred out of his seven direct reports.

Would it be appropriate for me to have a conversation to better understand why I was the only one affected? If so how would I approach it? I’m a bit hurt and feel I am either his least favourite or there was a business decision around being managed out?