We have a Custom Post Type with contents on it, that always had its
hierarchical setting set to
false, and we'd like to change it so some new contents are organized as child of the old contents.
I don't know very well the intricacies behind the Custom Post Types, so I wondered if setting the
true, would damage in some way the old contents?
I understand that SEO wouldn't be affected, because only new contents would acquire the new URL hierarchy, right?
Thanks for any hint,