Koch, R. A., A. W. Wilson, O. Séné, T. W. Henkel & M. C. Aime (2017) Resolved phylogeny and biogeography of the root pathogen Armillaria and its gasteroid relative, Guyanagaster. BMC Evolutionary Biology 17: 33 . (Link)
This wasn't a good idea, as the Desarmillaria split was unnecessary and Armillaria is better off unsplit. Unlike many splits, Desarmillaria is right next to Armillaria phylogenetically, so there isn't a good reason to treat them as separate genera.
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.
This wasn't a good idea, as the Desarmillaria split was unnecessary and Armillaria is better off unsplit. Unlike many splits, Desarmillaria is right next to Armillaria phylogenetically, so there isn't a good reason to treat them as separate genera.