title: My IIS7 URL rewrite rules keep disappearing
body: <p>I have regular IIS7 rewrite rules -- the SEO ones (canonical name tags, trailing slashes, lowercase letters).  They work fine.</p>
  
  <p>But then a day later, or even a few hours later, they're gone -- as if they were never there in the first place, so I have to redo them again in IIS7.</p>
  
  <p>Can anybody tell me why this is happening, and what I should do?  Thanks!</p>