diff --git a/csharp/App/Backend/Model/TreeNode.Equality.cs b/csharp/App/Backend/Model/TreeNode.Equality.cs
index e2e374ef4..f37cd51d7 100644
--- a/csharp/App/Backend/Model/TreeNode.Equality.cs
+++ b/csharp/App/Backend/Model/TreeNode.Equality.cs
@@ -4,9 +4,10 @@ namespace InnovEnergy.App.Backend.Model;
 
 public abstract partial class TreeNode
 {
+    // Note: Only consider Id, but not ParentId for TreeNode equality checks
     protected Boolean Equals(TreeNode other)
     {
-        return Id == other.Id && ParentId == other.ParentId;
+        return Id == other.Id;
     }
 
     public override Boolean Equals(Object? obj)
@@ -17,8 +18,5 @@ public abstract partial class TreeNode
     }
 
     [SuppressMessage("ReSharper", "NonReadonlyMemberInGetHashCode")]
-    public override Int32 GetHashCode()
-    {
-        return HashCode.Combine(Id, ParentId);
-    }
+    public override Int32 GetHashCode() => Id.GetHashCode();
 }
\ No newline at end of file