and they are not supposed to have previews in fcdb xp as the face files are not in the .big file. So when u double click on the player in fcdb and close it without clicking the dot beside "specific" or something like that fcdb will revert that player's face to a generic one.
So u have to re-install the patch arsenal_fc as u have changed the original face assignment.
So u have to re-install the patch arsenal_fc as u have changed the original face assignment.