Categories in permalink not working

[hhummell81]

Hi,

after moving all my posts to new categories, the old permalinks are still working. In fact, I have the permalink configuration in /%category%/%post_name%/ as before, but now, i can write whatever in category field, that it is loading the post. Before the bulk move, it returns a 404 if the post is not in that category.

Any idea?

Thanks in advance.