Yah, I just made a change to it because I would've just fallen short of SQD.
The original fare showed as 1042 SQD on the cow tool. So I changed a segment to one that was +114 "air transportation charges". That's when I noticed SQD on the cowtool go down.
When I go to cancel the fare, it shows:
Base Fare = $797
Carrier Surcharges = $366
Rest = Taxes