Hi, you can't move the recovery points from one Backup Vault to another.
But you can stop your backups on the old one and start it on the new one.
If you delete all previous Recovery jobs, you can move the same VMs to the new Recovery Services Vault.
However, if you want to retain the existing data in the old Recovery Services vault, you will need to go through the following process:
1- Stop VM Protection- (Not Delete)
2- Move VM to another RG
3- Enable New or Existing RSV to VM