I created an Edit Post Form with "Add new content" type, everything ok.
I can't update the custom select field to the database,
I clone this to a new post form and change the Form type to "Edit existing content",
I create a Content Template and insert the Edit Form into it
I add Edit post link in View so that all records in loop with be provided a button to edit the post
I edit the post and save, only the text field can be updated but not the select field
Below is the shortcode of a required field, if I edit the post without change it, keep prompting errors when saving. I edit the post and it supposes the content is kept, why it is required to do the update. There are two options, I have to change to another and then change it back to pass the saving.