Yes, I did this and it works. (like Timestamp(Timestamp) as Timestamp).
Also session duration was fixed with interval ([Session Duration], 'hh:mm:ss')
But also have noticed that file paths are now separated with '/' and in QV 11.2 they were with '\'. Is there any exhaustive list about what is different in the log files in QV 12.20 compared to QV 11.2 ?