I am having this same issue now with this plugin:
“WP to Buffer Pro”
Wordperfect 4.8.2
WP To Buffer Pro 3.3.9
I can create field group, and can edit and save location and options. But when I add new fields then hit save or update, it wipes out the fields. Location and Options will update.
When I disable the WP to Buffer Pro plugin, it works fine and I’m able to create fields. Also the fields will display on Edit Post pages. But if attempt to update the custom fields settings it will wipe them out of the admin section.
