Editing form submission confirmation pages

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I want to create a new page or two on the root of the Sitemap in Dashboard. These will be form confirmation pages, so they will not be part of the nav.

1. One exists already, but when I try to view it via the Sitemap (to edit it) I get the error " Error: Invalid confirmation code. Try copying the confirmation link from your email and pasting it into the address bar of your browser."

2. How do I create a file that appears on the root and not under the file above it? Or how do I move a nested file to root?