So here is the situation, i have created a CPT (portfolio) with acf and assigned to it a custom taxonomie (category) and posted some content in the CPT and the taxonomie wich was fine.

But then i changed the portfolio CPT name to "Case study", not only the archive page does not display the posts but i can't find the posts anymore, even if they seems here in the taxonomie "categorie" wich is now assigned to "case study".

How to recover the posts and display them under the new CPT, and also the archive page should display the posts.

I don't know where to look.