[Feature Request] how can I make this post types to -> post & category without breaking every posts translations.

I have a website that has like 10 post types. But I will move every post type to under post and category.
Website didn't need to create that many post type they could have just used categories.
Problem is they installed wpml with 3 language. every post type and posts has 3 language.

how can I make this post types to -> post & category without breaking every posts translations.