When B. sonorus is treated as a distinct species, as is currently the case on iNat (consistent with Ascher & Pickering 2022), B. pensylvanicus becomes monotypic, so this subspecies is no longer necessary. The small handful of IDs of it correspond to the exact same concept as iNat's current B. pensylvanicus (and in the event of a re-lump of sonorus could be easily reassigned to B. p. pensylvanicus). (This taxon change should've taken place simultaneously with taxon change 15750 in 2016, which, in swapping B. p. sonorus 313870 [added at the same time as the nominate subspecies in 2013] into B. sonorus, made the nominate subspecies superfluous.)
Ascher, J. S. and J. Pickering. 2022.
Discover Life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila).
http://www.discoverlife.org/mp/20q?guide=Apoidea_species (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.