From 7c148c3c7c0a023a07162a232f243f5a06d1ec86 Mon Sep 17 00:00:00 2001
From: martin-77 <52350479+martin-77@users.noreply.github.com>
Date: Sun, 16 Aug 2026 13:41:27 +0200
Subject: Fix large playlist persistence

---
 CONTRIBUTORS.md                                                | 1 +
 Jellyfin.Server.Implementations/Item/ItemPersistenceService.cs | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index ace97d191f..f6a725853d 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -238,6 +238,7 @@
  - [elio42](https://github.com/elio42)
  - [rwebster85](https://github.com/rwebster85)
  - [Florin-Popescu](https://github.com/Florin-Popescu)
+ - [martin-77](https://github.com/martin-77)
 
 # Emby Contributors
 
diff --git a/Jellyfin.Server.Implementations/Item/ItemPersistenceService.cs b/Jellyfin.Server.Implementations/Item/ItemPersistenceService.cs
index 3585f85c61..efff3457a3 100644
--- a/Jellyfin.Server.Implementations/Item/ItemPersistenceService.cs
+++ b/Jellyfin.Server.Implementations/Item/ItemPersistenceService.cs
@@ -538,7 +538,7 @@ public class ItemPersistenceService : IItemPersistenceService
                 var childIdsToCheck = resolvedChildren.Select(c => c.ChildId).Distinct().ToList();
                 var existingChildIds = childIdsToCheck.Count > 0
                     ? context.BaseItems
-                        .Where(e => childIdsToCheck.Contains(e.Id))
+                        .WhereOneOrMany(childIdsToCheck, e => e.Id)
                         .Select(e => e.Id)
                         .ToHashSet()
                     : [];
-- 
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