Unable to Update Workout .fit Files

Since mid-October, I have been unable to successfully update workout .fit files to my Epix Pro Gen 2.  In the past, I created workout .fit files using the API, copied them to the NewFiles folder, 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 online Fit File Viewer is able to read and display the file contents.  I saw that the watch's NewFiles folder has been emptied as expected.

Please advise.