How consistent is the info from KVS?

I tried AMS-YYZ on Feb. 18,2007
On Sabre:
KL691 J9 C9 Z9 S9 B9 M9 K9 H9 L9 Q9 T9 V2
so there are C9 (open miles business award) and S9 (open miles economy award). No D, no W.

So I expected on ITA Awards/Skyteam:
KL691 YS- YA+ CS- CA+

But surprisingly it says:
KL 691 YS- YA+ CS+ CA+

Howcome?

Added:
the same info for 1-6 seats on ITA, but when 7 or more seats are requested it gives
YS- YA+ CS- CA+