backups.zip contains two folders, new_world and new_adventurer .

new_world contains the world ('region1' folder) after 250 years of worldgen, and non-legends information from Legends mode, particularly including the world map.

new_adventurer contains the world ('region1' folder) saved immediately after creating a new adventurer in the town Ponderedplunge, non-legends information from Legends mode after retiring that adventurer, and a screenshot of the map seen in the Ctrl-Q screen.

Ponderedplunge on the world map is represented as a '#' in Legends mode both before and after adventurer creation+retirement, but from the Ctrl-Q screen it is represented as a '+'.

Incidentally, shops are present as normal and there is (only?) a population change between Legends modes of 2526 -> 2206 humans. (Also 6 more human outcasts, 2 fewer reptile man outcasts, 1 fewer amphibian man outcast; reasonable for two weeks, compared to the 320 humans drop.)
(The site maps for Ponderedplunge also show no large differences other than some colour changes.)

The two main questions: Why does the town icon drop two levels from # to + (despite the comparatively-small population change), and why does it appear as # again in the Legends mode map after retiring?

(I'm also curious about the 320 humans population drop, but it's understandable if that's a reason that it's a consequence of worldgen ending for the moment.)