Despite having the autoCraft property set to false, KoLmafia always turns skulls of the Bonerdagon into Badass Belts when you ascend. Iím not really sure why youíd ever want that, as the components are not quest items, the Badass Belt isnít particularly popular as a softcore pull, and the skull is actually a piece of equipment in its own right.
Skimming through the code, I canít establish what is causing this behavior. Auto-crafting in general is a bit of a mess, in my opinion. Itís really unintuitive to have hard-coded and undocumented behavior like that, and I donít think anyone really gets much out of it.