If I decide to change one of my character's traits -- I revise their preferred position or they gain some piercings and tattoos or something -- the only way to do this at the moment is remove the trait altogether (including all context and preferences) and add it back again with the new category. Copying and pasting the context is simple enough, but setting up preferences again can sometimes be nontrivial! And now that character comparisons are a thing, having accurate trait categories is far more important.
Please add a way to change the trait categories we've chosen for our characters in-place without having to remove anything.