I tried another test by running my zone for 15 minutes and got my zone to 110% and the graph does represent the new moisture. I think on ios it’s just a caching issue of the top level soil moisture. I pulled to refresh on the zones card and the zone moisture and chart were correct.
I’ll chat with the ios team and see if they can always dynamically load the moisture level displayed on a zone.
On both Android and iOS I am seeing an up to date chart whenever I navigate to the soil moisture chart for zones.