I had updated to Newburyport and rolled back to M1 (twice), currently on M1. I just checked my keyboard shortcuts and all nudge settings are indeed cleared (not assigned) anymore.
Edit: I did reassign them to the Num pad keys - "locate key" did identify them as Num Pad, and since they were all in view I rebound them by just mouse clicking. I did notice after assignment that the Num Pad numbers register as the number row numbers (i.e., the Screenset keys, if the section below the "Locate Key" has focus - not sure if this existed before?). A bit concerned I just tested the new nudge assignments, and they do work from the number pad.