Zwift ride won't upload

So I did the stage 3 of the tour of london, kept going for more miles as I was doing a training ride and finished my metric century achievement (have a screen shot of it) only for zwift to screw up during the upload process when I finished my ride. As there are 4 Zwift fit files on my computer for today’s ride, which one do I try and upload to Strava? Is there a way to get credit for finishing the stage and my achievement?

Thank you

Here you can merge several fit files for your Strava upload.
https://gotoes.org/strava/Combine_GPX_TCX_FIT_Files.php

You should have your 100km badge already. It’s ingame and doesn’t have anything to do with strava.