Regarding the 'Implement Pervasive Encryption for a Dataset' at the following link :
Is there any recommendation or suggestion to encrypt existing datasets rather than just new datasets? IBM may have a product called 'IBM z/OS Data Set Mobility Facility' to deal with conversion of existing unencrypted datasets. Does Top Secret have an option or utility to convert existing unencrypted datasets to become encrypted?
Release : 16.0
Component : CA Top Secret for z/OS
Top Secret does not have a utility to do this. To encrypt an existing dataset, the records need to be read and rewritten.