Discovery is not completion
Crossing the mist exposes the dungeon on the map, but the icon alone is not a reliable completion record. Maintain a manual done/not-done field from the beginning.
Group by nearest Beacon
A Beacon-based route is easier to resume and diagnose than a single global list. Add key or trigger prerequisites beside each entry so a locked dungeon does not break the sweep.
Before New Game Plus
The launch sources report all 35 can be completed before the next cycle. Compare your manual record against the map before committing to New Game Plus.