group all Reverse order

[李运田]

when I use group all,I find that the order reverses. is there a setting I can 
use not to Reverse order.
data:
(1,a)
(2,b)
(all,{(2,b),(1,a)})
BUT I want to get
(all,{(1,a),(2,b)})


Is there a setting?  thanks