I'm just tried splitting a flashcard category into subcategories, using the "sequential" option. So, if I have 10 cards and choose to split them into 2 categories sequentially, category A should have cards 1-5, and B cards 6-10, right? This is not the behavior I'm seeing when trying to split a 70 cards into subcategories of 12 cards each. At the moment, I have not idea what logic was used to split the cards (it's definitely not alternating).