An environment copy is a database-side clone of one environment to another. The second environment becomes an exact copy of the first, with the exception of SSO setup and API tokens. SSO and API tokens will remain the same before and after a clone.
The environment copies can be performed in either direction: DEV up to PROD or PROD down to DEV. The only prerequisite is that the two environments need to be on the same product version. DEV and UAT environments get product updates a few days sooner than PROD environments, and updates occur roughly once month. Updates to the Govern product are posted to our Govern Announcements section.
As part of a separate process, we also keep backups of environments. If you'd like to restore the PROD environment to a point prior to the clone, I'll create a ticket on your behalf.