title: What are the methods to migrate millions of nodes and edges from 0.44 to 0.5?
body: <p>I'm migrating the entire Titan graph database from 0.44 to 0.5. There are about 120 million nodes and 90 million edges that's gigabytes of data. I tried the GraphML format, but it didn't work.</p>
  
  <p>Can you suggest methods to do the migration?</p>