Honestly I think switching to UUIDs would be better than trying to support both. For example, right now the clojure code knows the

serial

is an `Int`https://github.com/puppetlabs/puppetserver/blob/b1b351a0bb4ad29adbff8070e32916d140[…]c2f89/src/clj/puppetlabs/puppetserver/certificate_authority.clj