The creation and customization of database applications using Microsoft Access
Thanks Albert. You're the best.
Funny thing is, I use DSN-less links on all my Access apps but somehow I got in the (bad) habit of using DSNs in Pass-Thru queries. Through trial & error I did find the solution after I posted the question, which was to use my standard connection string to that database without the DSN. So that corroborates your recommendation.
Thanx!