Hi Trevor,
I did look into this a few days back when I first saw your post, but not sure what is causing it. I was hoping Lee might have responded.
For my part, I have checked the database for the date concerned and there are loads of reports from your flights (both PAW and ADSB) from a wide range of ground stations (sometimes up to 6 or 7 at a time) which is why groundstation playback replays properly, so your systems must have been working. But there definitely seems to be something missing or corrupted in your track files which is causing the track replay to show as ‘level flight’ with sudden altitude fluctuations.
I know we have seen this before during testing, where the altitude suddenly reports as much higher or lower than the actual altitude. This artificially compresses the replay track, making it look like you have been flying level except for the sudden jumps, but unfortunately I can’t recall what the cause (or solution) was. Hopefully this will prompt someone reading this and they will come on and remind me.
The only things I can suggest from what you’ve posted is to check that your GPS and PAW Bridge are both seated correctly, though either of those would have affected the groundstation reports too, so unlikely.
Let me know if you find anything. In the meantime I’ll keep racking my brain to see if I can recollect what the earlier problem (and solution) was.
Best Regards
Peter