The change in epithet is due to the following: Tritonia nilsodhneri was first described (1963) by Tardy as T. odhneri but that name had already been used (1959) for a species from Chile, so Eveline Marcus changed it to Tritonia nilsodhneri (1983). Now Korshunova and Martynov reclassified it in the Duvaucelia genus (as D. nilsodhneri). As Tritonia odhneri and Duvaucelia nilsodhneri belong to different genera, the original specific epithet chosen by Tardy can be recovered, thus the choice of Duvaucelia odhneri.
Korshunova, T.; Martynov, A. (2020). Consolidated data on the phylogeny and evolution of the family Tritoniidae (Gastropoda: Nudibranchia) contribute to genera reassessment and clarify the taxonomic status of the neuroscience models Tritonia and Tochuina. PLOS ONE. 15(11): e0242103., available online at https://doi.org/10.1371/journal.pone.0242103 (Link)
Unintended disagreements occur when a parent (B) is
thinned by swapping a child (E) to another part of the
taxonomic tree, resulting in existing IDs of the parent being interpreted
as disagreements with existing IDs of the swapped child.
Identification
ID 2 of taxon E will be an unintended disagreement with ID 1 of taxon B after the taxon swap
If thinning a parent results in more than 10 unintended disagreements, you
should split the parent after swapping the child to replace existing IDs
of the parent (B) with IDs that don't disagree.