Strictly speaking, Oenanthe oenanthe should also be split into Oenanthe oenanthe/Oenanthe seebohmi. However, the range of seebohmi overlaps completely, and there are 100+ O.oenanthe obs that fall outside the atlas for some reason.
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.
Strictly speaking, Oenanthe oenanthe should also be split into Oenanthe oenanthe/Oenanthe seebohmi. However, the range of seebohmi overlaps completely, and there are 100+ O.oenanthe obs that fall outside the atlas for some reason.