Wizard mode saves wipe out my advanced code

I know there are plenty of disclaimers in the interface on this, and I backed up my code, but how do I add a 'thank you' message to my form with advanced code? Every time I try saving in Wizard mode, it destroys the layout divs that have to be there around the form elements.

Ok, neeeevvermind. I misinterpreted the Wizard/custom code dropdown. It needed to be custom.🙄