I have created a post-parent relationship in my site.
architect is the parent post and new is the child post.
In every parent post that has child I get the error that shows on the screenshot. If I press save to the parent, all the relationship is gone and the most strange is that all of the child posts to that parent become parents as well!!!
I mean to say is there any custom field(s) attached to you news post type - if yes, is there any repeating field?
if you do not know what is repeating field and how its added, I would like to have temporary access to review your site settings in order to be of quick help.
*** Please make a FULL BACKUP of your database and website.***
I would also eventually need to request temporary access (WP-Admin and FTP) to your site. Preferably to a test site where the problem has been replicated if possible in order to be of better help and check if some configurations might need to be changed.
I would additionally need your permission to de- and re-activate Plugins and the Theme, and to change configurations on the site. This is also a reason the backup is really important. If you agree to this, please use the form fields I have enabled below to provide temporary access details (wp-admin and FTP).
I have set the next reply to private which means only you and I have access to it.