Changes made in system files are recorded in the log file. Thanks to the log information, the changes made can be observed or even undone. In order to view the log information, in the layer box, click on the 'View Log File' button, one of the options of the layer to be accessed.
All changes made within the layer are listed in the log file. It can be seen by whom the action is taken on which geometry.
In addition, as you scroll the table, you can see which action was taken and when. Using the Options button at the beginning of each action, the old and new versions of the geometries can be seen on the map.
With the recycle button, geometries are restored to their previous state so data loss is prevented.