There are two concepts of the genus Anemone presented in the taxon split:
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Old, broad concept of the genus: Anemone sensu lato (taxon #51242): This is now an inactive taxon and will not count toward the community taxon calculation. This inactive taxon included species like pasqueflowers (A. nuttaliana), hepaticas (A. americana), wood anemones (A. quinquefolia). It and all its descendant taxa are now inactive, and the IDs have been transferred to other genera, including:
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New, narrow concept of the genus: Anemone sensu stricto (taxon #883652): excludes those species above; only includes the species listed at the taxon page, including A. caroliniana. The genera Anemonastrum, Anemonoides, Eriocapitella, Hepatica, Knowltonia, and Pulsatilla are considered separate from the sensu stricto genus Anemone.
When looking at the example:
ID1: Anemone caroliniana
ID2, Russell’s: Anemone (genus), old sensu lato version of Anemone, explicit disagreement w/ A.caroliniana
When the taxon split commits, if no atlases are created, or where range maps overlap, the IDs are reassigned to the common ancestor, in this case the tribe Anemoneae.
The system knows Russell is saying that it’s definitely not A. caroliniana. But once the taxon split goes through, it’s not possible for it to know which of the “new” genera that he meant. Transferring the explicit disagreement to the tribe would be wrong, because that would be saying he disagrees it’s in the genus Anemone too. Related are the pending(?) changes to branch disagreements, discussed here:
https://www.inaturalist.org/blog/25514-clarifying-ancestor-disagreements
https://forum.inaturalist.org/t/change-wording-used-by-the-system-when-downgrading-an-observation-to-an-higher-level-taxa/3862/119