I installed the latest Diptrace and registered it without a hitch, copied my C:\Diptrace working folder that contains all my libraries and projects but discovered I was missing the configuration files for Diptrace to know where everything is located. I found a C:\ProgramData\Diptrace folder and copied it to my new machine now everything is where my projects want.
With Windows 10 you have to add folders outside of your Documents folder to the File History application to get them backed.
C:\Users\Kevin\Documents\DipTrace is the default location but leaving it there makes sharing projects and libraries a pain.