I use a FR230. When I am finished it uploads to Garmin Connect through bluetooth with my phone. I have my Strava account synched with my GC account, so it uploads to Strava immediately after GC.
My GC account shows elevation gain for each run, but my Strava always shows zero (over many months). On my club leaderboard I just have a dash for elevation gain. Anyone know what the issue is? I live in a very flat area, so I am mainly asking out of curiosity.
I've noticed that strava is stingier with elevation. I think their algorithm does net gain rather than cumulative, so small ups and downs may not be accounted for. If you live in a very flat area (hlls under 40-50 feet in elevation), they might not register.
Strava has a rule about needing something like 10 meters of continuous altitude gain to register, to avoid overcounting, which results in a tremendous under counting. If all of your runs are in an area with less than 30 feet of absolute elevation change, you'll always end up with a goose egg.
Makes sense. I went back to when I traveled home over the holidays (much more elevation there) and the numbers were a perfect match on the couple of days I checked. There must be some sort of minimum like you said.