THANKS!!! That solved several different items.
Also (in case others have the same issue), but adding an entry on the specific country in the order by I was even able to have the usual country display at the top of the list.

Looks like this is (hopefully) finally resolved.

Just curious ... what will happen when that is removed?

Will the update on just stop functioning or will be there be a 'transition' period, where we will get a warning before it is completely removed?

Just trying to think about how I might need to update this (and other sites) that use the update on feature. (I don't have a 'master list' that shows me everywhere I've used 'update on' across multiple sites).

Although we were able to get most of our mapping to work with your suggestions, we still have a number of users who end up at the invoicing address screen and are having problems with the Sate/Province because there are no states listed unless you initiate a change in the country field.

Per your earlier comments:

Where you stated
This is a known issue.

Is there a fix planned, or a work-around possible?

Just wondering if you have any fix for the state/province select not properly being populated with a list of states when the Country is pre-populated with our default country ("United States").