Add Note regarding Scriptblock behaviour exception (#12677)

* Add Note regarding Scriptblock behaviour exception

As per PowerShell/PowerShell#4218
The documentation should outline exceptions in a CMDlet's behaviour.

* Editorial change and copy changes across versions

---------

Co-authored-by: Sean Wheeler <sean.wheeler@microsoft.com>

Author: taku-nm

reference/5.1/Microsoft.PowerShell.Utility/Import-Clixml.md

@@ -2,7 +2,7 @@
 external help file: Microsoft.PowerShell.Commands.Utility.dll-Help.xml
 Locale: en-US
 Module Name: Microsoft.PowerShell.Utility
-ms.date: 01/31/2024
+ms.date: 01/20/2026
 online version: https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/import-clixml?view=powershell-5.1&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: Import-Clixml
@@ -48,6 +48,10 @@ The **TypeNames** property contains the original type name prefixed with `Deseri
 `Import-Clixml` uses the byte-order-mark (BOM) to detect the encoding format of the file. If the
 file has no BOM, it assumes the encoding is UTF8.
 
+> [!NOTE]
+> `[System.Management.Automation.ScriptBlock]` objects are serialized into the `<SKB>` element in
+> CLIXML. However, the `<SKB>` element is always deserialized to **Strings**.
+
 For more information about CLI, see
 [Language independence](/dotnet/standard/language-independence).
 

reference/7.4/Microsoft.PowerShell.Utility/Import-Clixml.md

@@ -2,7 +2,7 @@
 external help file: Microsoft.PowerShell.Commands.Utility.dll-Help.xml
 Locale: en-US
 Module Name: Microsoft.PowerShell.Utility
-ms.date: 01/31/2024
+ms.date: 01/20/2026
 online version: https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/import-clixml?view=powershell-7.4&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: Import-Clixml
@@ -48,6 +48,10 @@ The **TypeNames** property contains the original type name prefixed with `Deseri
 `Import-Clixml` uses the byte-order-mark (BOM) to detect the encoding format of the file. If the
 file has no BOM, it assumes the encoding is UTF8.
 
+> [!NOTE]
+> `[System.Management.Automation.ScriptBlock]` objects are serialized into the `<SKB>` element in
+> CLIXML. However, the `<SKB>` element is always deserialized to **Strings**.
+
 For more information about CLI, see
 [Language independence](/dotnet/standard/language-independence).
 

reference/7.5/Microsoft.PowerShell.Utility/Import-Clixml.md

@@ -2,7 +2,7 @@
 external help file: Microsoft.PowerShell.Commands.Utility.dll-Help.xml
 Locale: en-US
 Module Name: Microsoft.PowerShell.Utility
-ms.date: 01/31/2024
+ms.date: 01/20/2026
 online version: https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/import-clixml?view=powershell-7.5&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: Import-Clixml
@@ -48,6 +48,10 @@ The **TypeNames** property contains the original type name prefixed with `Deseri
 `Import-Clixml` uses the byte-order-mark (BOM) to detect the encoding format of the file. If the
 file has no BOM, it assumes the encoding is UTF8.
 
+> [!NOTE]
+> `[System.Management.Automation.ScriptBlock]` objects are serialized into the `<SKB>` element in
+> CLIXML. However, the `<SKB>` element is always deserialized to **Strings**.
+
 For more information about CLI, see
 [Language independence](/dotnet/standard/language-independence).
 

reference/7.6/Microsoft.PowerShell.Utility/Import-Clixml.md

@@ -2,7 +2,7 @@
 external help file: Microsoft.PowerShell.Commands.Utility.dll-Help.xml
 Locale: en-US
 Module Name: Microsoft.PowerShell.Utility
-ms.date: 01/31/2024
+ms.date: 01/20/2026
 online version: https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/import-clixml?view=powershell-7.6&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: Import-Clixml
@@ -48,6 +48,10 @@ The **TypeNames** property contains the original type name prefixed with `Deseri
 `Import-Clixml` uses the byte-order-mark (BOM) to detect the encoding format of the file. If the
 file has no BOM, it assumes the encoding is UTF8.
 
+> [!NOTE]
+> `[System.Management.Automation.ScriptBlock]` objects are serialized into the `<SKB>` element in
+> CLIXML. However, the `<SKB>` element is always deserialized to **Strings**.
+
 For more information about CLI, see
 [Language independence](/dotnet/standard/language-independence).