Provisionning package (ppkg) in upgrade TS ?

[Antda]

Hello everyone
After 4 days fighting with Upgrade task sequence, I don't know what to do anymore
 

As I can't use the custom Windows 10 image with OEM + Theme + Provisionned app removed in Upgrade task sequence I had to repeat the action within the Upgrade TS

 

I used the Provisioning packages for Windows 10 way, generated a PPKG & tried :

DISM /Online /Add-ProvisioningPackage /PackagePath:TOTO.ppkg
DISM /Image:%OSDISK%\ /Add-ProvisioningPackage /PackagePath:TOTO.ppkg
DISM.exe /Image=C:\  /Add-ProvisioningPackage /PackagePath:TOTO.ppkg

none working

So I tried the powershell way, executing my PS1 script from network share :

powershell.exe -ExecutionPolicy Bypass -Command ".\removedefaultapps.ps1"
 

 echo "Uninstalling default apps"
$apps = @(

"Microsoft.3DBuilder"
"Microsoft.Getstarted"
"Microsoft.Messaging"
"Microsoft.Microsoft3DViewer"
"Microsoft.MicrosoftOfficeHub"
"Microsoft.MicrosoftSolitaireCollection"
"Microsoft.MicrosoftStickyNotes"
"Microsoft.Office.OneNote"
"microsoft.windowscommunicationsapps"
"Microsoft.OneConnect"
"Microsoft.People"
"Microsoft.SkypeApp"
"Microsoft.StorePurchaseApp"
"Microsoft.WindowsFeedbackHub"
"Microsoft.WindowsPhone"
"Microsoft.WindowsStore"
"microsoft.windowscommunicationsapps"
"Microsoft.XboxApp"
"Microsoft.XboxGameOverlay"
"Microsoft.XboxIdentityProvider"
"Microsoft.XboxSpeechToTextOverlay"
"Microsoft.ZuneMusic"
"Microsoft.ZuneVideo"

)
 
foreach ($app in $apps) {
echo "Trying to remove $app"

 
Get-AppxPackage -Name $app -AllUsers | Remove-AppxPackage
Get-AppXProvisionedPackage -Online |
where DisplayName -EQ $app |
Remove-AppxProvisionedPackage -Online
}

Doesn't work
If I run them (script OR PPKG) AFTER the tasks sequence (once logged in inside the upgraded computer) then it's working fine !

Any idea ?

Thanks
Antoine