Can't Remove or Change Contacts Photos of users

Hi every one,

I can't remove several users photos from their contacts

Some of them Work online mode and cache mode.

I remove the Value from Active Directory thumbnailphoto and logo Attribute i set it to (Not Set) value.

I run powershell command (Update-GlobalAddressList and Update-OfflineAddresBook).

Please Help, Can't Can not get rid of it.

Example:

Zvi Alikyan

Zvi Alikyan