Edwards, R. D., Cantley, J. T., Chau, M. M., Keeley, S. C., & Funk, V. A. (2018). Biogeography and relationships within the Melanthera alliance: A pantropical lineage (Compositae: Heliantheae: Ecliptinae). Taxon, 67(3), 552-564. (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.