With the help of this Video KB, we will be able to compose queries to display older version of objects in Repository Manager and create Dynamic Deployment Groups to deploy older version of objects into another Repository.
How to unassign services from an expired key and assign them to a valid key in 9.1.0 and 9.5.1
How to automate the repository and domain back up process for disaster recovery in PowerCenter
Converting and adding of a self signed certificate to use a Webservice Consumer transformation