Regardless of the AddRecord or AddGenRecordForm (which your examples shows AddGenRecordForm),
You will want to use the 'LinkAway' function in a formula text field, like so:
"<a class='Vibrant Success' href='javascript:LinkAway(\""&[URL Formula]&"\");'>Submit and redirect</a>"
// This works because you have turned on the table's advance settings, "Save parent record automatically when a child record is created."
// This also is borrowing the LinkAway that gets automatically added for formula url fields. We are invoking it here so when we are directed to the success.html page the record is first saved.
