Among the three categories of action tracked by the database log (INSERT, DELETE, UPDATE), the delete lines are poorly fulfilled on the History tab : on the Previous value column, "0" and "None" are largely widespread, and on the Value column the cells are simply empty. On the other hand, the insert lines are well documented with "real" values other than "0" and "None".

It would be more suitable if on the Previous value column "real" values were filled out : With those information on the screen, it is easier to understand which informations are deleted.