A user reported that his drafts are getting submitted without his knowledge. Since he does not have an Forms account, his drafts are in the public box. The links he has in his email have a submission ID in them which I can use to try to track the history and find out who is submitting his drafts.
However when I search for this submission ID in the cf_form_submissions table, it does not exist, which means it has entered a state in which it must have been moved to another table.
I was thinking that both drafts and submissions are stored in this table and I would find it even if it was submitted.
In order to find the history I need to find a way to find a submission's status from draft through completion. I don't believe deleting a draft is a function that is available so I can safely assume no one got a hold of it and deleted it.