diff --git a/src/Nest/Test/TestYH2.tsx b/src/Nest/Test/TestYH2.tsx
index 3c85fc73c..a0a06aa52 100644
--- a/src/Nest/Test/TestYH2.tsx
+++ b/src/Nest/Test/TestYH2.tsx
@@ -1,6 +1,8 @@
 import React from "react";
 import { Command } from "../../Editor/CommandMachine";
 import { AppToaster } from "../../UI/Components/Toaster";
+import { NestFiler } from "../Common/Filer";
+import { Individual } from "../Core/Individual";
 import { OptimizeMachine } from "../Core/OptimizeMachine";
 import { InitParts, Place } from "./PlaceUtil";
 
@@ -17,6 +19,12 @@ export class Command_TestYH2 implements Command
         m.PutParts(db.Parts);
         m.callBack = async (inv) =>
         {
+            let f = new NestFiler();
+            inv.WriteFile(f);
+
+            inv = new Individual(db.Parts);
+            inv.ReadFile(f);
+
             Place(inv, db.Parts, db.Bin);
         };