In situations where ARB asks you for a decision (e.g. whether to delete all marked species), you may check the 'Never ask again' toggle.
If you do so, ARB will automatically answer future questions of the same type, in the way you did after checking the toggle, for the rest of the current ARB session.
To save your answers permanentely for future ARB sessions ´Save properties´.
Reactivation of questions
To reactivate any "disabled questions" for the rest of the current ARB session, use 'Reactivate questions' from the properties menu.