In my event, I have 2 type of tickets: A = $100, B = $200

- Firstly, I add 3 ticket (type A) in cart (total = $300)

- Secondly, remove a ticket (Total = $200) -> Check menu Attendees in SO in Event, its correct (2 ticket Draft + 1 ticket Cancel)

- Thirdly, still remove a ticket from cart (Total = $100) -> Check menu Attendees in SO in Event, its not update  (still 2 ticket Draft + 1 ticket Cancel) 

Finally, checkout with total = $100

-> Total when remove item is correct, but it not update in Attendees page, still save 3 tickets that have been purchased

Only update state of attendees the first time, when remove ticket from cart 

Please help me ~~~