I made a simple file and a preview, it acts wonky, It does seem to show most of them backwards. But some suddenly pop onto the sphere out from nowhere.
PS you need to delete the bake and bake again. then use your own system paths as described in the text editor. PS i renamed the file to _cleaned, so that cache folder name is different as i typed in the text editor.
Second, when you copy the files back, make sure you use move copy, other wise the next time you run the script it raises an error. The reversed (ouput) folder needs to be empty from the start
When i use a short end time, i made sure the end is way before the end of the last frame in the scene, it does look better. Still goes a but wonky at the end.
I adjusted the script, you wont need to manually move them back, the script takes care of that now