Breakthrough! I accidentally discovered that when I updated (saved) a page, suddenly the related projects appeared on the page. Likewise, the project page now lists that one page. So I’m going to update all the pages and see if the rest of the data shows up.

@Kevin, you really need a way to manually trigger updates!

My first try:
– removed the add-more files from piklist/parts/meta-boxes, leaving just the post-relate fields
– replaced plugin files for 0.9.9.5 with 0.9.4.29
– went into Piklist settings so that it theoretically knew it was running 0.9.4.x
– replaced files for 0.9.4.29 with 0.9.9.5
– back to Piklist settings
– nothing

2nd try:
– removed the whole piklist subdirectory from my theme so I could deactivate Piklist
– deactivated 0.9.9.5
– replaced plugin files for 0.9.9.5 with 0.9.4.29
– activated 0.9.4.29
– deactivated 0.9.4.29
– replaced files for 0.9.4.29 with 0.9.9.5
– replaced the piklist subdirectory into my theme
– activated 0.9.9.5
– nothing

3rd try:
– removed the piklist subdirectory
– deactivated 0.9.9.5
– replaced plugin files for 0.9.9.5 with 0.9.4.29
– replaced the piklist subdirectory into my theme
– activated 0.9.4.29
– edited a page with the post-relate fields (they are there)
– removed the piklist subdirectory
– deactivated 0.9.4.29
– replaced files for 0.9.4.29 with 0.9.9.5
– replaced the piklist subdirectory into my theme
– activated 0.9.9.5
– edited a page with the post-relate fields
– nothing

That’s not counting the times that I forgot to remove or replace the piklist parts files. 😉

So I studied the Piklist code. I edited Piklist_Admin::check_update line 719 to always be true, and Piklist_Admin::get_update line 799 be true for version number ‘0.9.9.’ This forced Piklist to offer me the update. For some reason it displayed everything twice, but otherwise seemed to run fine. It did not list the post-relate field in its output report (see image), but I now have the post relationships back.

Donna

I just saw another post https://piklist.com/support/topic/how-are-post-relationships-stored/ which indicates that the post-relate data was stored in a table called wp_piklist_cpt_relate. However, this table wasn’t present in the current DB or in my backups.

The metabox code, FYI:

/*
Title: Related Projects
Post Type: page
Description: list of projects related to this page
*/
  
piklist('field', array(
	'type' => 'post-relate',
	'scope' => 'project',
	'template' => 'field',
	'field' => 'related_project',
	'label' => 'Related Projects',
));

And the code to retrieve the pages related to a specific project:

$args = array(
	'post_type' => 'page', // Set post type you are relating to.
	'posts_per_page' => -1,
	'post_has' => $post->ID,
	'suppress_filters' => false, // This must be set to false
);
$list = get_posts( $args );

I can’t give you access to the live site. I just tested on my dev site, and was able to reproduce with the 2015 theme and all plugins disabled except for Piklist and a stripped down version of my Piklist add-on plugin.

I’m attaching a zip of my plugin. I can also provide you with a database export and/or set up a test account on my server.

happening with double-quotes in text fields as well … just realized it’s adding slashes every time I save *urk*