title: When should I merge my Cobertura ser files rather than reusing and adding to one?
body: <p>I am running several processes for code coverage. For example, unit tests and manual tests, etc. I want an overview of coverage for all the ways in which I exercised the code.</p>
  
  <p>Why not just specify the same <em>.ser</em> file for Cobertura each time? Cobertura will add new data to the <em>ser</em> file.</p>
  
  <p>On the other hand, under what circumstances should I use separate <em>.ser</em> files, then run the <em>cobertura-merge</em> command?</p>