M365DSCUtil: Fix #4333

CHANGELOG.md

@@ -13,6 +13,10 @@
 * MISC
   * Uninstall-M365DSCOutdatedDependencies
     * Outdated Microsoft365DSC-modules are now removed in their entirety
+  * M365DSCUtil
+    * Change heuristics on how to find the mandatory key of the resources to
+      include them as part of the ResourceInstanceName during their export
+      FIXES [#4333](https://github.com/microsoft/Microsoft365DSC/issues/4333)
 
 # 1.24.214.3
 
@@ -51,17 +55,18 @@
 * AADConditionalAccessPolicy
   * Removed invalid empty string value that was added to the validate set
     of two parameters.
-  * Updated permission reference for app-onlzy authentication.
-    FIXES [[#3329](https://github.com/microsoft/Microsoft365DSC/issues/3329)]
+  * Updated permission reference for app-only authentication.
+    FIXES [#3329](https://github.com/microsoft/Microsoft365DSC/issues/3329)
 * AADRoleEligibilityScheduleRequest
   * Fixed an issue where an error was thrown if no requests were found instead
     of simply returning the Null object.
 * AADRoleSetting
   * Fix handling of DisplayName property in comparison
     FIXES [#4019](https://github.com/microsoft/Microsoft365DSC/issues/4019)
 * AADUser
-  * Fixed and issue where an user would be created even if the resrouce was set to absent.
-    FIXES [[#4265](https://github.com/microsoft/Microsoft365DSC/issues/4265)]
+  * Fixed and issue where an user would be created even if the resource was set
+    to absent.
+    FIXES [#4265](https://github.com/microsoft/Microsoft365DSC/issues/4265)
 * EXOMobileDeviceMailboxPolicy
   * Fixes an issue where an empty MinPasswordLength value was always passed down
     to the update logic flow.

Modules/Microsoft365DSC/Modules/M365DSCUtil.psm1

@@ -3361,38 +3361,46 @@ function Get-M365DSCExportContentForResource
     $Results = Format-M365DSCString -Properties $Results `
         -ResourceName $ResourceName
 
+    if ($Script:AllM365DscResources.Count -eq 0)
+    {
+        $Script:AllM365DscResources = Get-DscResource -Module 'Microsoft365Dsc'
+    }
+
     $primaryKey = ''
-    if ($Results.ContainsKey('IsSingleInstance'))
+    $Resource = $Script:AllM365DscResources.Where({ $_.Name -eq $ResourceName })
+    $Keys = $Resource.Properties.Where({ $_.IsMandatory }) | `
+        Select-Object -ExpandProperty Name
+    if ($Keys.Contains('IsSingleInstance'))
     {
         $primaryKey = ''
     }
-    elseif ($Results.ContainsKey('DisplayName'))
+    elseif ($Keys.Contains('DisplayName'))
     {
         $primaryKey = $Results.DisplayName
     }
-    elseif ($Results.ContainsKey('Identity'))
-    {
-        $primaryKey = $Results.Identity
-    }
-    elseif ($Results.ContainsKey('Id'))
-    {
-        $primaryKey = $Results.Id
-    }
-    elseif ($Results.ContainsKey('Name'))
+    elseif ($Keys.Contains('Name'))
     {
         $primaryKey = $Results.Name
     }
-    elseif ($Results.ContainsKey('Title'))
+    elseif ($Keys.Contains('Title'))
     {
         $primaryKey = $Results.Title
     }
-    elseif ($Results.ContainsKey('CdnType'))
+    elseif ($Keys.Contains('Identity'))
+    {
+        $primaryKey = $Results.Identity
+    }
+    elseif ($Keys.Contains('Id'))
     {
-        $primaryKey = $Results.CdnType
+        $primaryKey = $Results.Id
     }
-    elseif ($Results.ContainsKey('Usage'))
+
+    if ([String]::IsNullOrEmpty($primaryKey))
     {
-        $primaryKey = $Results.Usage
+        foreach ($Key in $Keys)
+        {
+            $primaryKey += $Results.$Key
+        }
     }
 
     $instanceName = $ResourceName