Is it true that once a revision package is imported into production, it can be reverted by importing a new revision with the old rules?

The statement is false because once a revision package is imported into production, it cannot be reverted simply by importing another revision with older rules. The Pega platform maintains a versioned history of rules, and once a new version is deployed, it becomes the current active version. It is not possible to "rollback" to a previous version by just importing it as another revision.

In typical development and production scenarios, reverting changes requires a more structured approach. This might include either resetting the current rules to a previous state through a controlled deployment process or employing specific rollback strategies defined by the organization. These processes ensure that any rollback is managed carefully to avoid inconsistencies in the production environment.

The other options present different scenarios, like requiring approval for reversion, but Pega does not inherently support reverting to previous rule sets merely by importing older revisions. Such processes are designed with controls to ensure the stability and reliability of production systems.