First Connection error, now upload problem

Hey guys. I’ve got a question:
During my fondo workout I had a technical hiccup. I was pedaling but my trainer didn’t recognize it. I had to switch off the trainer, Apple TV and companion app and turn everything back on. The app asked me, if I wanted to resume and I did. I finished the workout and pressed upload (to Strava).
On Strava is only shown the first period of warmup and workout. On zwift I can see both, the warmup before the hiccup (12 minutes) and major workout after the hiccup (54 minutes). But when I use the fit file of the second workout part to load up to Strava, it still only shows me the first part (12 minutes).
Do you know, what to do?