You are preparing to create a new major version of an application ruleset in which...

Use the Ruleset Maintenance wizard to skim the relevant ruleset versions to copy the highest version of existing rules to the new ruleset version.

Use the Ruleset Maintenance wizard to merge the existing rules in the relevant ruleset versions to the new version.

Use the Application Structure landing page to lock and roll the existing ruleset versions to the new version.

Create a new application ruleset using the appropriate version number, then copy the highest version of existing rules into the new ruleset version.