Thanks Grace, but I am confused. 

Why do I need to create a NEW term, when in theory the terms that exist should work?  I can do this, but what I want to use is Net 30.... which is there already, so why does creating a new term of Net 30 work?  And if I call it "standard" when my clients see that, how do they know when their invoice is due?  I have different clients with different Nets, so this really matters in my world.

Or are you telling me to disable (is that a thing?) all the existing terms and recreate them?  I'm sorry if I am sounding thick, I am just missing something clearly.  Gotta be trying to do my job and all my staff's jobs at the same time AND deciding to upgrade now... what was I thinking?