The module folder and returns within it duplicate in the ProFile directory.
Note: The file path in the address bar is C:\Users\[USER NAME]\Documents\My ProFile Data.
Within the 2016T1 folder, there is another 2016T1 folder generated, containing the same files.
Note: The file path in the address bar is C:\Users\[USER NAME]\Documents\My ProFile Data\2016T1.
ProFile will read all the files from the higher-level 2016T1 folder, as well as the duplicate sub folder.
Resolution
Move the duplicate folder out of the directory to a different location on the computer.
Additional resolutions
Duplicating returns may also be the result files of corrupted database files.
Review the article Files are being excluded or incorrectly displayed in Classic Database or Client Explorer for a resolution.