I can't imagine why FedEx Screw scheduling is simply dropping R days for Pay for those who indicate they don't want to fly to China per the OIM.

Would be so much better if they called to assign you a trip possibly departing in 90 minutes only to learn that you're opting out of China trips...then on to the next guy, then the next guy, and so on.

Hard to predict what FedEx would do if you received a Reserve assignment and then foolishly said, well I don't want to go to China. Or...I was just about to call in sick.

Best I think you could hope for would be an irregularity report and a required Doctors note.
Worst would be R days dropped without pay.

But at least you'll have been able to avoid China