Can I use GravityView to edit Custom Post Types?
GravityView allows you to edit Posts created by a form when Post Fields are used.
GravityView can also modify Custom Post Types created with a form. However, only CPTs created with this plugin are editable at this moment: https://wordpress.org/plugins/gravity-forms-custom-post-types/
CPTs created with the Advanced Post Creation add-on can't be editable with GravityView yet, unfortunately.