C
Curly green fingers
Guest
They divide it because they don't want to work a 1 1/2 brood? If I overwinter with a super on top (stores) I put a QE on first inspection so the queen can't lay in it anymore and it can be used as a honey super when needs be. Doing it early also means that there's no drone brood so they don't get stuck in QE.
You don't have to do the QE sinario once the queen has layed in the half she will generally move down into the brood box anyway.
I've two halfs on some and you can move frames into the lower box and put fresh comb above for stores nectar etc..
We are all different and work our hives in different ways ��