fyskis already gave you the answer ,
man until you use flags to give users vips "ADMIN_LEVEL_H" you no more need to add vip from other file ...
only if u create an other method to give vip !
you can create a boolean
PHP Code:
new bool:is_user_vip[33];
read from file when player is authorized set boolean true ! if her steam_id is equal with one from vips.ini ( if u wana use this method tell me and i will help !