Low sugar=low calcium issue on chart

Hi-
I have an alloted 32 sugar count for my food chart. I noticed that when I keep the sugars under that, my reported Calcium goes way too low. I am wondering if anyone else notices this on their chart? I looked up good low sugar calcium subs but most have SUGAR! Veggies, nuts, you name it, it takes up at least one third of my sugar mg.
thoughts, advice?
thanks