Holloway, J.D. & Miller, S., 2003. The composition, generic placement and host-plant relationships of the joviana-group in the Parallelia generic complex (Lepidoptera: Noctuidae, Catocalinae) Invertebrate Systematics17: 111-128. (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.