Please clarify vagrant behavior
<p>I have just started working with Vagrant. After starting guest machine and making some changes (e.g. installed some updates and python virtualenvs). And after few (<code>vagrant halt</code> and <code>vagrant reload</code>) when I ssh-ed into guest machine I noticed that all my changes disappeared. When I opened the Virtualbox I saw that there were two boxes with the name of my folder with guest os and on every <code>vagrant up</code> it seems like it is starting the second machine. When I started the first guest os through virtual box interface I saw that my data was present. How can I start with vagrant the first machine? Should I delete the second? When was it created?</p>

<p>Start with <code>vagrant up</code></p>

<p>Vagrantfile</p>

<pre><code>Vagrant.configure(2) do |config|
  config.vm.box = "trusty_14"
  config.vm.network "forwarded_port", guest: 8000, host: 8000
end`
</code></pre>