Sorry to be the annoying ‘bump’ guy but I really need a solution to this and spent a few hours today on it to no avail. I’m sure I had this issue a long time ago and resolved it but for the life of me I can’t remember how.
In addition to this, a similar problem happens with file uploads. I attach to the form and they display on the front end but when I edit the CPT in the dashboard, the files aren’t there.