Archived data will be located in a separate folder from your live data.
Example: Locating archived Payroll data
Archived payroll data is stored in Payroll master (Master.prm) files and Payroll transaction (Current.prt or history.prt) files. To view potential location for previously archived data, search the server for *.prt or *.prm. If locations are found that are not on the company list, see How do I access folders containing archived data? to add them to the list.
If you need to loate archived Job Cost files, search for *.jcm or *.jct.