The File Archive view has 3 tabs: Payroll Archive, Pay Form Archive (for pay slips) and W2 Archive. Once the module is installed (SYSTEM/MODULES/FILE ARCHIVE MODULE), everyone will see File Import and File Archive in the menu (due to how the permissions are structured). ADMIN/GM/USPS STANDARD users will, by default, be able to view all 3 types. The users will be able to see a listing for "sets" of files. For instance, W2 Archive will have a list of years - when they select a year, a listing of the individual files will be available in the highlight viewer (when row is selected) and then be able to download individual files.
To View Imported data, go to Utilities/File Archive
Payroll Archive is past Payrolls for employees from Classic
Pay Form Archive is past Pay Slips for employees from Classic
W2 Archive is past W2's for employees from Classic
W2 Archive example:
Click on 2017 Tax Year
To Open or Save, click on 
next to the employees name