Confirm Closing of Unsaved images - Missing

Under Preferences>Environment in Gimp 2.8.10 there is a check box ‘Confirm closing of unsaved images’. In Gimp 2.10 this feature is missing in Environment. Has this been moved to another area or just deleted? Is there a way to issue a text command that would be equivalent to unchecking this box?

I don’t need the prompt for saving.

I can not even remember that option, certainly gone in later Gimp 2.8 versions.

All part of the Gimp 2.6 → 2.8 controversy when Save split to Save (.xcf) and Export (other image formats) and that argument went on for years.

It is a way of preventing the unwary from losing data.

There are plugins that let you Save or Export without the popup message