title: how to delete heroku app and switch to the new app created from the same files?
body: <p>I am using Heroku toolbelt:</p>
  
  <ol>
  <li>Command line:  <code>&gt;heroku create app1</code> (root application)</li>
  <li>Delete app1 from Heroku Dashboard in the browser.</li>
  <li>Command line: <code>&gt;heroku create app2</code> (from the same root application)</li>
  <li><p>I wanted to add variable: <code>heroku config:set MYVAR=value</code></p>
  
  <p>Then I get the error:</p>
  
  <pre><code>Setting MYVAR and restarting app1... !
   !    Couldn't find that app.
  </code></pre></li>
  </ol>
  
  <p>How can I switch to the new app (app2) and remove app1 completely?</p>