title: Editing a current process definition in Activiti
body: <p>Whenever I need to make a change in the process definition I have to re deploy the process definition.It seems that creates a new version of the process definition.</p>
  
  <p>Is there a way where I can update the existing process definition and not create a new version all the time.</p>
  
  <p>What will happen to the old process instances if there is a new version of process definition in place.</p>
  
  <p>Any help on the above queries is appreciated.</p>