I don't know whether it's my zencart problem. (1.3.8a)
I enabled "freeoptions" (sort order=1, order>$100) and "zones" (sort order=2) in shipping module.
when total order < $100, it's fine. It just shows "zones" option.
but when total order > $100, it shows both options, which I think "zones" option is meaningless to the customer.
How should I configure such that only "freeoptions" shown if order > $100?