Poweshell Export-Connection gives error using WAC 2103

It seems that the powershell cmdlets for exporting / importing connections are no longer working in WAC 2103

Steps to re-produce the issue open powershell then run the following commands

Import-Module "$env:ProgramFiles\windows admin center\PowerShell\Modules\ConnectionTools"
Export-Connection https://$env:computername
Invoke-WebRequest : The remote server returned an error: (500) Internal Server Error.
At C:\Program Files\windows admin center\PowerShell\Modules\ConnectionTools\ConnectionTools.psm1:75 char:17
+     $response = Invoke-WebRequest @params
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebExc
   eption
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand

Failed to get the connections
At C:\Program Files\windows admin center\PowerShell\Modules\ConnectionTools\ConnectionTools.psm1:77 char:9
+         throw "Failed to get the connections"
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : OperationStopped: (Failed to get the connections:String) [], RuntimeException
    + FullyQualifiedErrorId : Failed to get the connections

On checking the module versions it seems that the ConnectionTools module is now listed as version 0.0 vs 0.1 in 2009

PS C:\temp> get-module -name ConnectionTools

ModuleType Version    Name                                ExportedCommands
---------- -------    ----                                ----------------
Script     0.0        ConnectionTools                     {Export-Connection, Import-Connection}

On trying to do an import with the new module 

PS C:\temp> Import-Connection https://$env:computername -fileName .\WACReset.txt
ConvertFrom-Json : Invalid JSON primitive: The.
At C:\Program Files\windows admin center\PowerShell\Modules\ConnectionTools\ConnectionTools.psm1:206 char:18
+         $error = ConvertFrom-Json $_
+                  ~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [ConvertFrom-Json], ArgumentException
    + FullyQualifiedErrorId : System.ArgumentException,Microsoft.PowerShell.Commands.ConvertFromJsonCommand

It will then list out the servers that should have been added but dosnt apply them.

This happened on a 2009 -> 2103 upgrade and also on a fresh install on a windows 10 Sandbox Machine.

Windows Admin Center