Since October, I have been unable to successfully update workout .fit files to my Epix Pro II. In the past, I created workout .fit files using the FIT SDK, copied them to the Epix's NewFiles folder from my Windows 10 PC, and the watch processed the .fit files to its Workouts folder. Now, after copying updated .fit files (with minor changes) to the NewFiles folder and disconnecting the watch's USB cable and after restarting, the new workouts do not appear on the watch. The NewFiles folder has been emptied as expected. In the past, after copying .fit files into NewFiles, I observed that some temporary file(s) were created in that folder. That is not happening now.
I have only 16 workout files on the watch. The workouts have a maximum of 36 steps, so I'm well within limits on both. There is plenty of unused storage on the watch. I have also tried this with a small (10-step), uniquely-named workout with the same result.
The only change that I made to the watch around October is that I loaded some .MP3s to listen to via Bluetooth (sounded bad, so I removed them).
Any ideas?