title: How to migrate safely from Miniconda2 to Miniconda3?
body: <p>Given the pending <a href="https://pythonclock.org/" rel="nofollow noreferrer">retirement of python 2 support</a> in January 2020, we should be thinking about migrating from Miniconda2, which is python 2 based, to Miniconda3, which is python 3 based.</p>
  
  <p>As of the date of asking this question, <a href="https://docs.conda.io/en/latest/miniconda.html" rel="nofollow noreferrer">the Miniconda web pages</a> don't address this topic.</p>
  
  <p>Is there a good procedure for converting from Miniconda2 to Miniconda3 that will preserve the existing environments created under Miniconda2?</p>