does reset calibration data wipe all data sources from health?

thanks, Nicholas. I recalibrated in order to hopefully fix my altimeter issue. that issue is still pending performance over the next two or three days.

I also did some research to address my "data source" issue. I had multiple iPhones & Apple Watches in my privacy settings in the Health App. (I've only owned paired the same watch to the same phone, but after unpairing & resetting my iPhone, I unwittingly created new data sources.) I concluded that I have overloaded the IOS and that by deleting the data sources I might reboot connectivity to Cardio Fitness, which had not updated for several days despite daily fitness activities that always posted a VO2 Max result. My watch now updates Cardio as before.

I've seen others complain of a similar issue and suggest Apple provide an IOS update to prevent these multiple data sources from corrupting performance of an otherwise superior product.

Thanks!

Glad my post helped you find an answer, Cesar. For additional background, this webpage may be helpful. https://www.myhealthyapple.com/how-to-erase-health-data-from-apple-watch-and-paired-iphone/ Not sure if my conclusion that multiple data sources impede proper functioning of Health App, but my watch started updating to Health with Cardio Fitness numbers immediately after I removed extra data sources; 3 total seemed to be the magic number for me.