But, previous to MD's recent WF info updates <appver> showed 2400 (stands for Quicken 2015, or earlier, I believe) - 2600 stands for 2017.
And, when you open the “setup online banking” window there is some info that shows for an already setup institution. That info updated (flashed) for WFA when the connection was not working and I clicked on refresh. I was not paying enough attention to note if there was an actual change or what it was, but an update does not happen on other setups that work or the now working WFA setup. I just mentioned it as a possible indicator of whether a change occurs, or not, on doing a "refresh".