in my I-94, i mistakely change my dob in mm/dd/yy. it was in dd/mm/yy format for the first time when it was inspected at the port of entry. do i have to correct it by replacement or it will be fine if i will change it back to dd/mm/yy format by myself with a pen. i asked my international advisor and he told me that it is ok and no need to spend $340.00 for the replacement.