Lovari, S., Lorenzini, R., Masseti, M., Pereladova, O., Carden, R.F. & Brook, S.M. 2016. Cervus elaphus. The IUCN Red List of Threatened Species 2016: e.T55997072A22155320. http://dx.doi.org/10.2305/IUCN.UK.2016-2.RLTS.T55997072A22155320.en. (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.