Cannot set Azure SQL Database Long-term backup retention - azure-sql-database

Question

I'm trying to re-configure long term backup retention for my Azure SQL Database from a previously deleted recovery services vault (via Powershell) to a new recovery services vault
Now when I try to configure it gives me an error saying
TemplateBladeVirtualPart
SQLAZUREEXTENSION
Here is the script I used to removed the old recovery services vault (if it matters?)
$vault = Get-AzureRmRecoveryServicesVault -Name "is-vault-prod"
Set-AzureRmRecoveryServicesVaultContext -Vault $vault
$container = Get-AzureRmRecoveryServicesBackupContainer -ContainerType AzureSQL -FriendlyName $vault.Name
$item = Get-AzureRmRecoveryServicesBackupItem -Container $container -WorkloadType AzureSQLDatabase
$availableBackups = Get-AzureRmRecoveryServicesBackupRecoveryPoint -Item $item
$containers = Get-AzureRmRecoveryServicesBackupContainer -ContainerType AzureSQL -FriendlyName $vault.Name
ForEach ($container in $containers)
{
$items = Get-AzureRmRecoveryServicesBackupItem -container $container -WorkloadType AzureSQLDatabase
ForEach ($item in $items)
{
Disable-AzureRmRecoveryServicesBackupProtection -item $item -RemoveRecoveryPoints -ea SilentlyContinue
}
Unregister-AzureRmRecoveryServicesBackupContainer -Container $container
}
Remove-AzureRmRecoveryServicesVault -Vault $vault

Answer 1

Unfortunately, you just cannot choose another Recovery service vault once you had already used one.
I did a test in my lab and tried to disable the long backup retention but still failed, and found that:
This screenshot means that once you configured a recovery service vault for a SQL Server, it will be locked , you cannot use another vault.
I also found this in a FAQ:
Can I register my server to store backups to more than one vault?
No, you can currently store backups to only one vault at a time.
I understand why you want to use another vault.
However, We can just use this recovery service vault currently.If it was deleted, we cannot use long-term backup retention. It seems like a bad point of design. I will report this issue and I believe this feature would be better in future.
You can also post your idea in this Feedback Forum.
Hope this helps!