Set-AzSynapseLinkedService Overriding Azure Function Auth Method

[jreitz43]

Description

Possible Similar Support Issues
This may be the same issue as Issue 21930
Summary
While invoking "Set-AzSynapseLinkedService" against an Azure Function linked service, using the System Assigned Managed Identity authentication type in the source reference file, the command succeeds and correctly deploys everything in the source code definition file, but overrides the authentication type with "Anonymous". instead of the correct authentication method value in the definition file of "MSI"
Command
Set-AzSynapseLinkedService -WorkspaceName <workspace name> -Name <azure function linked service name> -DefinitionFile <definition file location>
Definition File Json

Output

Issue script & Debug output

Set-AzSynapseLinkedService -WorkspaceName <workspace name> -Name <azure function linked service name> -DefinitionFile <definition file location>

Environment data

PS C:\WINDOWS\system32> $PSVersionTable

Name                           Value
----                           -----
PSVersion                      5.1.17763.4644
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.17763.4644
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

Module versions

ModuleType      Version     Name             ExportedCommands
----------      -------     ----             ---------------
Script          2.12.5      Az.Accounts      {Disable-AzDataCollection, Disable-AzContextAutosave, Enab...
Script          2.2.0       Az.Synapse       {Get-AzSynapseSparkJob, Stop-AzSynapseSparkJob, Submit-AzS...

Error output

No error output, succeeds and correctly deploys everything else in the source code definition file, but overrides authentication method with Anonymous (see screenshots).

[microsoft-github-policy-service]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @wonner, @v-yanjungao.