@Santiranjan There is no OOTB feature to achieve your requirement to move all rules of same type to highest version, nor is there  there is an OOTB wizard to delete the list of instance of particular rule type.

I believe this question was answered in this post:

Also see below for some articles on best practise:

https://docs-previous.pega.com/devops/86/understanding-best-practices-version-control-devops-pipeline https://docs-previous.pega.com/application-development/86/rule-skimming-higher-ruleset-versions https://docs-previous.pega.com/how-skim-compress-merge-copy-and-delete-rulesets-ruleset-maintenance-wizard

Likely you will need to write your own activity or use the suggestion below.

https://collaborate.pega.com/discussion/post-skimming-rule-deletion

Using the wizard we can only delete one at a time ruleset/ruleset version.  There is an open enhancement request item FDBK-17303 which may be considered by our product team for future versions.