OK thanks for the clarification.

So what about the csv file created on the day it happen. Did Portabase make this file because I didn't. The file is 15 kb and the accumulated real file size which I have saved as a backup is 7Kb. Secondly the file that was lost was only one months data. The restored file was 3 months of data.
Is it possible that no data was restored and the file was only hidden by Portabase.