so if i'm reading this right, let's say i have the AAA-BBB-CCC-DDD itinerary. if i create EF alerts for AAA-BBB, one for BBB-CCC and one for CCC-DDD all individually and any one of them is showing R>0, each time i should be able to call in and confirm an upgrade for that particular leg?
sounding like to me that the trick is to look for each one separately, right? almost as if on a multi-segment flight searching all at once seems to give the lowest common denominator, in this case R=0.