@AkhilR03 

By delete , if you mean deletion from the table corresponds to the case class , it cant be retrieved as it is hard delete. unless untill there is a backup taken for that table 

To avoid this situation , we can have below solution:

The cases which are ready for purging  can have some status defined  based on the purge policy defined by business , which will ensure the cases remain with us as per conditions of business , Once purge policy is met we can go ahead and delete those instances as per business approval.