XS_ALWAYS_CONFIRM_SAVE_WHEN_EXIT
Category in Advanced options dialog: Modeling properties
Use this advanced option to define whether Tekla Structures prompts you to save the model if you are closing it without making any changes.
If this advanced option is set to TRUE (default), Tekla Structures always asks you to save the model when closing it.
If this advanced option is set to FALSE, Tekla Structures does not ask you to save the model if there are no changes after the last save.
This advanced option is user specific and the setting is saved in options.bin under the user folder, for example, in C:\Users\<user>\AppData\Local\Trimble\Tekla Structures\<version>\UserSettings. Restart Tekla Structures to activate the new value.