diff --git a/contracts/cultnet/interop/carrier-vectors.cs-written.json b/contracts/cultnet/interop/carrier-vectors.cs-written.json
index 49f12ed0..394724cf 100644
--- a/contracts/cultnet/interop/carrier-vectors.cs-written.json
+++ b/contracts/cultnet/interop/carrier-vectors.cs-written.json
@@ -16,8 +16,7 @@
           "projection": "header",
           "descending": false,
           "limit": null,
-          "cursor": null,
-          "hasHop": false
+          "cursor": null
         },
         "shardId": null,
         "shardEpoch": null
@@ -70,8 +69,7 @@
           "projection": "document",
           "descending": true,
           "limit": 200,
-          "cursor": "opaque-cursor",
-          "hasHop": true
+          "cursor": "opaque-cursor"
         },
         "shardId": "shard-1",
         "shardEpoch": 7
@@ -94,8 +92,7 @@
           "projection": "header",
           "descending": false,
           "limit": null,
-          "cursor": null,
-          "hasHop": false
+          "cursor": null
         },
         "includeSnapshot": true,
         "consumerRuntimeId": null,
@@ -151,8 +148,7 @@
           "projection": "document",
           "descending": true,
           "limit": 200,
-          "cursor": "opaque-cursor",
-          "hasHop": true
+          "cursor": "opaque-cursor"
         },
         "includeSnapshot": false,
         "consumerRuntimeId": "consumer",
diff --git a/tests/GameCult.Networking.Tests/CarrierVectorTests.cs b/tests/GameCult.Networking.Tests/CarrierVectorTests.cs
index f294bc0f..8d50bb76 100644
--- a/tests/GameCult.Networking.Tests/CarrierVectorTests.cs
+++ b/tests/GameCult.Networking.Tests/CarrierVectorTests.cs
@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text.Json;
+using System.Text.Json.Nodes;
 using MessagePack;
 using NUnit.Framework;
 
@@ -120,10 +121,26 @@ namespace GameCult.Networking.Tests
                 name,
                 schemaVersion = message.SchemaVersion,
                 messagePackBase64 = Convert.ToBase64String(bytes),
-                expected = JsonSerializer.SerializeToElement(message, message.GetType(), JsonOptions)
+                expected = WithoutDerivedMembers(JsonSerializer.SerializeToNode(message, message.GetType(), JsonOptions))
             };
         }
 
+        // CultNetSelection.HasHop is an [IgnoreMember] convenience, not wire; System.Text.Json would emit it.
+        private static JsonNode? WithoutDerivedMembers(JsonNode? node)
+        {
+            switch (node)
+            {
+                case JsonObject obj:
+                    obj.Remove("hasHop");
+                    foreach (var child in obj.Select(pair => pair.Value).ToArray()) WithoutDerivedMembers(child);
+                    break;
+                case JsonArray array:
+                    foreach (var child in array) WithoutDerivedMembers(child);
+                    break;
+            }
+            return node;
+        }
+
         private static string VectorPath()
         {
             var directory = new DirectoryInfo(TestContext.CurrentContext.TestDirectory);