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Even if it is I'd ask why, build new add, drop old ones

cattle, not pets

It was not supported on On-Prem DDCs, so the Cloud connectors perform similar functions and MORE. I would suggest against this. Build new, and either push out the update ListOfDCC keys or allow Autoupdate to do it for you, depending on your environment as always. https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/manage-deployment/vda-registration.html#auto-update