custom field added to existing posts is not saved

Hello, I’m using version 1.2.3

If I build all the custom fields and then insert data everything is perfect.

But if I want to add a new custom field with existing posts and then I start editing the posts adding a value for this new field, whenever I load a post this new field goes back to the default value.

I have to manually change the value in the DB table ‘postsmeta’ and the page starts to work and visualizes as expected, but in the WYSIWYG editor the field it’s not updated at all.

This way I cannot make full use of your otherwise splendid and powerful plugin 🙁

https://wordpress.org/plugins/wck-custom-fields-and-custom-post-types-creator/