My Passport is not backing up all of the files selected

After the back up is complete both the C: my computer and the Passport  show the volume of data backed up is far less that what is actually in the file. (my documents for example the 2 columns show 3.2 GB when I actually have 38.6 GB  ) When I check the “back up” I see that whole files have not been included. As I watched the backup the “catagorizing files” excecute it shows a much larger amount . This is much closer to what is really on my computer. When catagorizing is complete it regresses to the much smaller data amount with the missing files.  FYI the files I am referring to are selected for back up and are not unusual size or file type.

If you want to make sure that Smartware is backing up all of the files, you can try selecting the option to do a file backup. Check the link below for the steps. Also be sure to have the latest Smartware version installed. 

How to backup specific files and folders using WD SmartWare Version 1.6.x and earlier