Say I’m at level 5 (which I am altho my badge still says 4?)), and one of the kanji I guru’d at for level 4 comes up to get to guru ii. I fail it, so it goes down to apprentice iv. Woule that put me back a level? Or, if I ended up way down at apprentice i for like all the kanji in level 1, 2, 3 or 4, would that put me back?
Just curious how that would work!!
Thanks,
No, you can only go down a level by intentionally resetting yourself to a lower level, which is nonstandard behaviour and comes with big warnings.
You can synchronize your badge by logging out and logging back in.
Reaching guru stage is called ‘passing’ an item, and once passed, it’s always passed.
Unless you reset to a lower level.
Same with burns. Once burned, the item is always burned, even if you resurrect the item. Then you can always manually reburn it, as well.
I was actually wondering about that! 
I was considering unburning some stuff, but didn’t wanna do the full SRS necessarily, and now I’m really exited about doing so! Thanks! ^>^