See YAGO, M., HIRAI, N., KONDO, M., TANIKAWA, T., ISHII, M., WANG, M., WILLIAMS, M. & UESHIMA, R. 2008. Molecular systematics and biogeography of the genus Zizina (Lepidoptera: Lycaenidae). Zootaxa 1746: 15-38.
https://www.mapress.com/zootaxa/2008/f/zt01746p038.pdf
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.