Make sure we deduplicate LinkedChildren

1 files changed, 6 insertions, 1 deletions

diff --git a/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs b/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
index bdc5b5df29..3a872f687c 100644
--- a/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
+++ b/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using MediaBrowser.Controller.Configuration;
@@ -70,7 +71,11 @@ public class BoxSetMetadataService : MetadataService<BoxSet, BoxSetInfo>
         if (mergeMetadataSettings)
         {
             // TODO: Change to only replace when currently empty or requested. This is currently not done because the metadata service is not handling attaching collection items based on the provider responses
-            targetItem.LinkedChildren = sourceItem.LinkedChildren.Concat(targetItem.LinkedChildren).DistinctBy(i => i.ItemId).ToArray();
+#pragma warning disable CS0618 // Type or member is obsolete - fallback for legacy path-based dedup
+            targetItem.LinkedChildren = sourceItem.LinkedChildren.Concat(targetItem.LinkedChildren)
+                .DistinctBy(i => i.ItemId.HasValue && !i.ItemId.Value.Equals(Guid.Empty) ? i.ItemId.Value.ToString() : i.Path ?? string.Empty)
+                .ToArray();
+#pragma warning restore CS0618
         }
     }