I have a heart rate alert set up on my watch for Zone 3 which is based on my LTH. I noticed that when my LTH is automatically adjusted by my watch, the heart rate alert max and min numbers do not change. If I actually select the max or min I can see that new set points but unless I select it the watch shows the old points. Do I have to manually adjust my heart rate alerts each time my zones change or will the watch eventually do this automatically?