Roon + MQA FAQ is here.
Yes. You don’t have to worry about the details unless you are trying to get a really specific outcome that is not in the category of “the way most people would want it to work”. A lot of effort/thought has gone into taking MQA (a very complex product/idea) and removing the need to understand it top to bottom in order to just listen to music.
Give it a little bit of time. That data is updated in the background. And make sure that all of your devices (cores + remotes) are updated to 1.5.