Hi @WinstonHoward-MSFT,
Certificate is running fine in App Services (in production right now) and has been for a while. Haven't tested being able to use it from KeyVault though. It's even running fine in another Azure Batch account which was set up at least a couple of years ago. The only reason we're looking at importing it again is because we need to create a new Batch account for some "specialist" VMs.
Regards,
Matthew