Tracking

I use Piwik and the WP-Piwik plugin for tracking stats on all of my sites, and as soon as I turn on CMP, I no longer get stats. I tried to add the tracking code manually into the global content page, but CMP strips out the script javascript function and just puts all of the tracking code on the page. Please advise

<!-- Piwik -->
<script type="text/javascript">
  var _paq = _paq || [];
  /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
  _paq.push(['trackPageView']);
  _paq.push(['enableLinkTracking']);
  (function() {
    var u="//www.xxxxxxxx.xxx/";
    _paq.push(['setTrackerUrl', u+'piwik.php']);
    _paq.push(['setSiteId', 'XXXXX']);
    var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
    g.type='text/javascript'; g.async=true; g.defer=true; g.src=u+'piwik.js'; s.parentNode.insertBefore(g,s);
  })();
</script>
<!-- End Piwik Code -->