Overview
Do not rely on reload or navigation to preserve a sandbox state. A newly opened Lab starts normal baseline physiology in Essentials, and guided-case position is page state.
Quiz score is for the current visit. The Crimson Circuit saves best-score XP and bonus unlocks in the current browser, while the active investigation’s score is visit state.
Browser-local data is not a cloud account backup. Another browser/device, cleared site data or private browsing can change what progress is available.