this one? if you're changing your calories burned by 70 cals a week, that should only change your ranges by 10 cals a day.
if you have overly aggressive loss goals, then you may be at a place where nothing in the calories burned would change your ranges. at which point you need to adjust your loss goals so that the program can function properly. keep in mind that the 1200 base for women and 1500 for men is a nutrient floor. simply put, you can't get all the things you need in less without professional help. so if the math works out to below those numbers, you just get popped in the lowest ranges even if the math won't work out there.