When the DataLog is deleted, a backup is automatically saved. To locate the saved backup, go to the folder the DataLog is exported to. By default, it is located in C:/EnviroLogix/QuickScan/Export. Or, if you are not sure, check the “Export DataLog” path in the Settings tab:
Once in the folder, you will see the backed-up DataLog:
Change the name by removing the “.bkp” extension: Right-click →Rename → DataLog.scsv