diff --git a/web/gui/src/test/_karma/ev/migrate/ev_4_addInstance_C.json b/web/gui/src/test/_karma/ev/migrate/ev_4_addInstance_C.json
new file mode 100644
index 0000000..b3376c0
--- /dev/null
+++ b/web/gui/src/test/_karma/ev/migrate/ev_4_addInstance_C.json
@@ -0,0 +1,14 @@
+{
+  "event": "addInstance",
+  "payload": {
+    "id": "instC",
+    "ip": "123.22.33.124",
+    "online": true,
+    "uiAttached": false,
+    "switches": 7,
+    "labels": [
+      "instC",
+      "123.22.33.124"
+    ]
+  }
+}