From 4bd9dbe9108c55bc788e35346498f710187d401d Mon Sep 17 00:00:00 2001
From: Shadowghost <Ghost_of_Stone@web.de>
Date: Wed, 25 Feb 2026 20:53:29 +0100
Subject: [PATCH] Fix LinkedChildren rerouting on primary version demotion

---
 MediaBrowser.Controller/Entities/Folder.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/MediaBrowser.Controller/Entities/Folder.cs b/MediaBrowser.Controller/Entities/Folder.cs
index e6c94d3cbe..3428d1fc12 100644
--- a/MediaBrowser.Controller/Entities/Folder.cs
+++ b/MediaBrowser.Controller/Entities/Folder.cs
@@ -588,6 +588,9 @@ namespace MediaBrowser.Controller.Entities
                     oldPrimary.SetPrimaryVersionId(newPrimary.Id);
                     oldPrimary.OwnerId = newPrimary.Id;
                     await oldPrimary.UpdateToRepositoryAsync(ItemUpdateType.MetadataEdit, cancellationToken).ConfigureAwait(false);
+
+                    // Re-route playlist/collection references from old primary to new primary
+                    LibraryManager.RerouteLinkedChildReferences(oldPrimary.Id, newPrimary.Id);
                 }
 
                 // After removing items, reattach any detached user data to remaining children