You don't seem to be making much sense here. It's not an absolute i.e; rate monastery member Bar on a scale from one to ten. It's an open-ended scale like temperature. At one point we thought ice through boiling water was all you needed, later one realized that there was much more outside of that; you have ice and then you have Antarctica, there's boiling water and then there's volcanoes and stars.

It's not "a random bumping downward" and you might just also go up a notch (on the numbered scale). In any event the number of XP you possess won't change.