What happens to your custom Conda environments when you upgrade ArcGIS Pro, say from 2.0 to 2.1.3?
Do you need to rebuild them all?
If you are referring to packages etc that you may have installed...they move to the new environment... at least that has been my experience with all existing upgrades and even now in the beta for 2.2.
Don't forget you can also clone an existing environment as a backup if you need to
Retrieving data ...