Update Media Root AppxProvisioning after app installation

Author: gus33000

src/UnifiedUpdatePlatform.Media.Creator.NET/BaseEditions/BaseEditionBuilder.cs

@@ -171,6 +171,7 @@ void callback2(string Operation, int ProgressPercentage, bool IsIndeterminate)
 
         public static bool CreateBaseEditionWithAppXs(
             string UUPPath,
+            string MediaPath,
             string LanguageCode,
             string EditionID,
             string InputWindowsREPath,
@@ -272,6 +273,19 @@ void customCallback(bool IsIndeterminate, int ProgressInPercentage, string SubOp
                     }
                 }
 
+                // Replace the AppxProvisioning file on the install media given the application list has been updated.
+                progressCallback?.Invoke(Common.Messaging.Common.ProcessPhase.ApplyingImage, true, 0, "Updating Installation Media AppxProvisioning.xml replacement manifest file.");
+                try
+                {
+                    File.Copy(
+                        Path.Combine(vhdSession.GetMountedPath(), "ProgramData", "Microsoft", "Windows", "AppxProvisioning.xml"),
+                        Path.Combine(MediaPath, "sources", "replacementmanifests", "microsoft-windows-appx-deployment-server", "appxprovisioning.xml"), true);
+                }
+                catch
+                {
+                    progressCallback?.Invoke(Common.Messaging.Common.ProcessPhase.ApplyingImage, true, 0, "An error occured while updating Installation Media AppxProvisioning.xml replacement manifest file. This error is not fatal.");
+                }
+
                 progressCallback?.Invoke(Common.Messaging.Common.ProcessPhase.IntegratingWinRE, true, 0, "Integrating WinRE");
                 File.Copy(InputWindowsREPath, Path.Combine(vhdSession.GetMountedPath(), "Windows", "System32", "Recovery", "Winre.wim"), true);
 

src/UnifiedUpdatePlatform.Media.Creator.NET/MediaCreator.cs

@@ -67,6 +67,7 @@ private static bool HandleEditionPlan(
                             // Allow AppX Slipstreaming
                             result = BaseEditionBuilder.CreateBaseEditionWithAppXs(
                                     UUPPath,
+                                    MediaPath,
                                     LanguageCode,
                                     targetEdition.PlannedEdition.EditionName,
                                     WinREWIMFilePath,