I noticed that the display for the (new version of) AHG Book Adventurer (Pi/Pa) in the Incomplete Achievements Book swaps the column titles for requirements 4 and 5. Therefore, the titles are ordered 1, 2, 3, 5, 4, 6, etc. The data of completion dates per girl is correctly ordered so the mismatch leads to confusion.
The requirement order is also correct (and correctly data matched) in the Record Progress (Bulk) page and individual girl record displays.