title: Firefox Dev tools: How to persist calls in network analysis
body: <p>Since Firebug is outdated with a recent update of Firefox I'm trying to work with the Firefox dev tools. As far as I read these are supposed to replace Firebug.</p>
  
  <p>However there is one option I used frequently in Firebug and haven't found yet in the Dev tools: The persist option in the network analysis.
  <a href="https://i.stack.imgur.com/BpLyZ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/BpLyZ.png" alt="The persist option in Firebug"></a></p>
  
  <p>Since I work on a project that uses AJAX Calls to send data and then redirect to another page, I need to persist the calls to analyze them after the redirect. Otherwise the time is far to short to have a look at the data that was send with this call. (This project is for work so this architecture is nothing I could change).</p>
  
  <p>Is there a way to persist the network calls in the Firefox Dev tools?</p>
  
  <p>(I use Firefox 56.0.1 by the way)</p>