If you rename an account or Safe, the Vault Conjur Synchronizer recreates these accounts and...

When an account or Safe is renamed in the Vault, the Vault Conjur Synchronizer will create new variables in Conjur with the new name and delete the old variables with the old name. This means that the permissions that were granted to the old variables in Conjur will not apply to the new variables, and they will need to be recreated using delegation policies. Otherwise, the users or hosts that had access to the old variables will not be able to access the new ones. References: Manage Accounts and Safes During Synchronization; Vault Synchronizer full policy guide