Support for the "Duplicate Posts" plugin

The plugin Duplicate posts makes (bug) double duplicate of your plugin’s meta. Next, when I resave a post, you delete one of them and add another, but there are still two entries in the meta table.

Steps:
1. I install CSF plugin. I setup a date field to Posts.
2. I edit the post and choose a date.
3. I install Duplicate posts plugin. I make a copy of the post.
4. Login to see the database meta table and there are two meta values for the new post with the same key.
5. I resave the copied post with changing the date.
6. Database check – second value resaved by you but the first one still remains.

https://ww.wp.xz.cn/plugins/custom-field-suite/