Within a form, we removed an event date yesterday (session was full), but the following day, we've recieved 2 form submissions for that removed date.
I'm assuming what has happened is they opened the form yesterday morning, but didn't submit it until today (it's a long form). So when they opened the form, that date WAS an option. Only when they submitted it, it wasn't - but there was nothing stopping them submitting the form.
I'd assumed there would be a check in the background that any options selected, are still available at the point of submission. Unless there's something else I should be doing...a work around to this sort of thing?