I'm working on a knowledge conversion from classic to lightning. I've migrated a small collection of article types to record types and enabled lightning knowledge. The problem I'm having is related to knowledge data categories - these don't appear when lightning experience is enabled, even when I try to create a new article I'm not given the option to assign it a data category. Doing the same thing in classic gives the option though. I'm finding it difficult to find a clear answer as to whether or not data categories work with lightning knowledge.