Fixed old code.

src/Squidex.Domain.Apps.Core.Operations/ExtractReferenceIds/ReferencesCleaner.cs

@@ -29,11 +29,6 @@ namespace Squidex.Domain.Apps.Core.ExtractReferenceIds
             return field.Accept(new ReferencesCleaner(value, oldReferences));
         }
 
-        public JToken Visit(IArrayField field)
-        {
-            return value;
-        }
-
         public JToken Visit(IField<AssetsFieldProperties> field)
         {
             return CleanIds();
@@ -97,5 +92,10 @@ namespace Squidex.Domain.Apps.Core.ExtractReferenceIds
         {
             return value;
         }
+
+        public JToken Visit(IArrayField field)
+        {
+            return value;
+        }
     }
 }

src/Squidex.Domain.Apps.Core.Operations/ExtractReferenceIds/ReferencesExtractor.cs

@@ -37,7 +37,7 @@ namespace Squidex.Domain.Apps.Core.ExtractReferenceIds
                 {
                     foreach (var nestedField in field.Fields)
                     {
-                        if (item.TryGetValue(field.Name, out var value))
+                        if (item.TryGetValue(nestedField.Name, out var value))
                         {
                             result.AddRange(nestedField.Accept(new ReferencesExtractor(value)));
                         }

tests/Squidex.Domain.Apps.Core.Tests/Operations/ExtractReferenceIds/ReferenceExtractionTests.cs

@@ -36,6 +36,8 @@ namespace Squidex.Domain.Apps.Core.Operations.ExtractReferenceIds
                     .AddNumber(3, "field3", Partitioning.Invariant)
                     .AddAssets(5, "assets1", Partitioning.Invariant)
                     .AddAssets(6, "assets2", Partitioning.Invariant)
+                    .AddArray(7, "array", Partitioning.Invariant, a => a
+                        .AddAssets(71, "assets71"))
                     .AddJson(4, "json", Partitioning.Language)
                     .UpdateField(3, f => f.Hide());
         }
@@ -159,6 +161,27 @@ namespace Squidex.Domain.Apps.Core.Operations.ExtractReferenceIds
             Assert.Same(token, result);
         }
 
+        [Fact]
+        public void Should_return_ids_from_nested_references_field()
+        {
+            var id1 = Guid.NewGuid();
+            var id2 = Guid.NewGuid();
+
+            var sut =
+                Fields.Array(1, "my-array", Partitioning.Invariant,
+                    Fields.References(1, "my-refs",
+                        new ReferencesFieldProperties { SchemaId = schemaId }));
+
+            var value =
+                new JArray(
+                    new JObject(
+                        new JProperty("my-refs", CreateValue(id1, id2))));
+
+            var result = sut.ExtractReferences(value).ToArray();
+
+            Assert.Equal(new[] { id1, id2, schemaId }, result);
+        }
+
         [Fact]
         public void Should_return_ids_from_references_field()
         {