Hi Kevin,

I have updated to 0.9.9.4, and the field only works as a checkbox. When I save it as a select field and try and change the value, when it saves, it has saved the new record and did not remove the old one.

I looked in the database, and the post I am editing, only keeps one __relate_post meta, but it does not delete the __relate_post of the last related post it was related too.

Here is the field:

piklist('field', array(
		 'type' => 'select'
		 ,'field' => '_' . piklist::$prefix . 'relate_post'
		 ,'label' => __('Mission Trip', 'extreme')
		 ,'choices' => piklist(
		   get_posts(array(
			 'post_type' => 'post_mission_trip'
			 ,'numberposts' => -1
			 ,'orderby' => 'meta_value_num'
			 ,'meta_key' => 'trip_begin'
			 ,'order' => 'DESC'
			 ,'post_status' => 'any'
		   ))
		   ,array('ID', 'post_title')
		 )
		 ,'relate' => array(
		   'scope' => 'post'
		 )
	   ));

I am not using any other relate_post fields with this post type or in the metabox.

I copied the form above exactly and it is doing the same thing.

I attached a screenshot of what it looks like after I change the value, but it seems to be a problem with the meta_key not being deleted from the related post.

Here is my entire meta-box:

<?php
/*
Title: User Registration
Post Type: trip_reg
*/

piklist('field', array(
        'type' => 'select'
        ,'field' => 'reg_user'
		,'label' => __('Person', 'Extreme')
		,'value' => '0' // Sets default to None
		,'description' => __('Please select your spouse below', 'Extreme')
		,'choices' => array( 0 => "Select User" ) + piklist(
						get_users(
							array(
								'orderby' => 'display_name'
								,'order' => 'asc'
							)
							,'objects'
						)
						,array(
							'ID'
							,'display_name'
						)
						)
      )); 

	   piklist('field', array(
  'type' => 'select'
  ,'field' => '_' . piklist::$prefix . 'relate_post'
  ,'label' => __('Mission Trip', 'extreme')
  ,'choices' => piklist(
    get_posts(array(
      'post_type' => 'post'
      ,'numberposts' => -1
      ,'orderby' => 'title'
      ,'order' => 'ASC'
    ))
    ,array('ID', 'post_title')
  )
  ,'relate' => array(
    'scope' => 'post'
  )
));
	  piklist('field', array(
        'type' => 'select'
        ,'field' => 'reg_mobi'
		,'label' => 'Mobilizer'
		,'value' => '0' // Sets default to None
		,'description' => 'Please select your Mobilizer below'
		,'choices' => array("None" => "None" ) + piklist(
						get_users(
							array(
								'role' => 'aamrole_5584794554851'
								,'orderby' => 'display_name'
								,'order' => 'asc'
							)
							,'objects'
						)
						,array(
							'ID'
							,'display_name'
						)
						)
      )); 
piklist('field', array(
'type' => 'radio'
,'field' => 'shirt_size'
,'value' => 'Large' // Sets default to large
,'label' => 'T-Shirt Size'
,'choices' => array(
  'Small' => 'Small'
  ,'Medium' => 'Medium'
  ,'Large' => 'Large'
  ,'XLarge' => 'XLarge'
)
));

piklist('field', array(
'type' => 'radio'
,'field' => 'reg_basic_form'
,'value' => 'False' // Sets default to large
,'label' => 'Basic Form Completed'
,'choices' => array(
  'True' => 'True'
  ,'False' => 'False'
)
));

piklist('field', array(
'type' => 'radio'
,'field' => 'reg_medical'
,'value' => 'False' // Sets default to large
,'label' => 'Medical Form Completed'
,'choices' => array(
  'True' => 'True'
  ,'False' => 'False'
)
));

?>