Oh boy... I'm having this issue now. :-)
I also cannot get user data to stay in the form fields on page refresh. When clicking "submit" on the form, if any field does not pass validation, when the page refreshes to reveal "showIf" content, all data is wiped out of the fields.
I tried replacing the newly provided file, as recommended in this post, and I have cleared the cache, as recommended elsewhere, and have restarted Dreamweaver, etc, etc. Unfortunately, I'm still having the issue.
I have zipped some of my files in case you want to look them over. (There seems to be an uploading issue with the forum right now, so I've kept them on our server.)
Also, you can see a demo of the problem with this temp form.