gorimatsu

Thank you very much for contacting me.

I tried the following.
It didn’t work.

[1] Added to functions.php

function registered_post_hierarchical ($ post_type, $ post_type_object) {
if ($ post_type ==’post’) {
$ post_type_object-> hierarchy = true;
add_post_type_support (‘post’,’page-attributes’);
}
}
add_action (‘registered_post_type’,’registered_post_hierarchical’, 10, 2);

[2] Use the menu generated in [1] to specify the parent post from the edit screen of the child post.

[3] Parent posts are members of the child category

[4] Breadcrumb NavXT settings
Post / Post hierarchy → Parent post

Because the above code conflicts with other plugins
I want to delete it if I don’t need it, is that a problem?

Hello.
We will contact support.
Thank you very much.

I found a solution in the past log.
I’m sorry to trouble you.