Ride not uploading correctly

I recently did a 40km ride on Zwift that does not get recorded correctly on the zwift feed page or strava.

The ‘numbers’ on the zwift feed page show the ride was 40km and 1.11 hour, but the map only shows a short ride of 5km. The upload to strava also only records a 5km ride…

So Zwift knows I did a 40km ride because it shows on the feed and counts to the weekly counter, but I can’t get it to upload correctly to strava. I downloaded the .fit file and re-tried to upload it, but it keeps showing a 5km ride. The corresponding log file does include activities/actions (f.i. sprints and KOMs) during the entire ride/period.