The 2013 Catalog of Life release includes some major changes to higher plant taxonomy. One of these is to merge the three phyla for mosses, liverworts, and hornworts into a single phylum. Because there is now no taxon for liverworts & hornworts, taxa identified as such are moved down the tree to the broader concept of Bryophyta. Hopefully they can be moved back up the tree by identifying them to class, as these ranks remain unchanged in the 2013 release.
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.
