Hello @James Louk - Thank you for your post!
Take a look here: https://learn.microsoft.com/en-us/azure/site-recovery/vmware-azure-manage-vcenter#migrate-all-vms-to-a-new-server
The documentation indicates how to do so, based on the needs of some servers, all servers, or most servers. As it stands, since the VMs are currently in Azure, you’d need to re-protect and failback the VMs in Azure that you want on the old vCenter. After that you can follow the steps in the documentation.
No matter which method you pick, if you use ASR to move between vCenters, you’ll have to failover to Azure, re-protect to the new vCenter, and then failover back to on-premises.
Refer to the doc - https://learn.microsoft.com/en-us/azure/site-recovery/vmware-azure-reprotect#before-you-start
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