Undeployed changes

Summary:

How to undeploy changes

Content (please ensure you mask any confidential information):

I wanted to confirm understanding of the 2 various ways of deploying changes.

1. Create a new pipeline job to delete a specific extension( I understand how this works)

2. In the environments tab there is an option to delete the version( Does this do the same thing as creating the above pipeline job)

I have noticed that this is only available in our 'source' pod? (In our case Dev 9) is this expected?

if not how can I get around this?

It seems to me if option 2 is the easiest way to undeploy changes so I just wanted to clarify if this is correct