Exported health data has invalid GPX workout route files after iOS 14 update
After updating to iOS 14, exported health data is incorrect. The GPX files under 'applehealthexport/workout-routes' are valid but contain now coordinate data and are all exactly 438 bytes in size.
Outside of GPX data missing coordinate data, route maps are no longer shown in the Activity App for past workouts, and new workouts show a map with just the starting point of a hike. I have not tested workouts outside of hiking.
Possibly related, exporting of health data now takes 40 minutes, instead of a few minutes with the zip file size being 192MB, and a decompressed size of 6.62GB.
Under iOS 13 the zip file size was 435.8MB, and a decompressed size of 6.84GB