Chris Scott; Conf iture;
Strange that there appears to be a discrepancy, but a diagram I have indicates that the No.1 spoilers are for ground use only.
I'm not sure of the actual source, but will try and find it.
EDIT :: Here it is:-
Electrical Flight Controls, From Airbus A320/330/340 to Future Military Transport Aircraft:
A Family of Fault-Tolerant Systems
by
Dominique Briere
Aerospatiale
Christian Favre
Aerospatiale
Pascal Traverse
Aerospatiale
The Avionics Handbook
mm43