How to reset Apple Mail's "Move to..." Prediction?
The move to button is stuck on one mailbox, which is seemingly a known bug, for Sierra and High Sierra, and now still unresolved in Mojave as well (10.14.2).
Moreover, I'd rather be able to turn off prediction entirely as well, and just get a plain "move to" button, as it is too easy to accidentally click the predicted mailbox, which is always/usually the wrong one anyway.
See this older post, which ends with someone saying a fix will be provided by Apple (this is now more than a year ago, and it's still bugged).