Finder sort order not alphabetical (again)
This was an easy fix... The naming scheme of my bank actually changed, from Konto_cccccccc-Auszug_20XX_NNN.PDF to Konto_cccccccc_Auszug-20XX_NNN.PDF, which is kind of invisible to the human eye. Thanks for @Tetsujin for the recommendation to eliminate typos by copying one name to another!