I appreciate your thorough answer, @RenjolynC.  I actually do NOT want to get rid of Quickbooks Desktop.  I'm  trying to to purchase a single-pay subscription to last until May 2024 that will (if possible) coordinate with my current annual-pay subscription.  It's my understanding that the price of a one-pay will jump when the 2022 version of QB is released next month, so I want to make a move before that time.

Is there someone I can speak with that will advise me how to do this?