No, that’s not what this usually means. Forms are often processed — and recorded just fine in a database — with a 302 redirect to another page as the response when that process is done.

This is pretty standard practice so that users don’t end up resubmitting the data if / when they happen to reload the page they end up at after the form submission. Honestly, you can’t tell what a server’s doing with a request, but I can say I’ve done exactly the above many times.