diff --git a/trunk/ConsoleDataMigration/sources/ConsoleRestore/ActCompleter.cpp b/trunk/ConsoleDataMigration/sources/ConsoleRestore/ActCompleter.cpp
index 67780a8..ba18441 100644
--- a/trunk/ConsoleDataMigration/sources/ConsoleRestore/ActCompleter.cpp
+++ b/trunk/ConsoleDataMigration/sources/ConsoleRestore/ActCompleter.cpp
@@ -16,6 +16,7 @@
 #include "ActCompleter.h"
 #include "Util.h"
 #include "CommonLogger.h"
+#include "HeapManager.h"
 #include <nn/ac/CTR/private/ac_InternalApi.h>
 #include <nn/act/act_ApiAdmin.h>
 #include <nn/act/act_ApiTransfer.h>
@@ -141,6 +142,7 @@ nn::Result ActCompleter::ExecImpl()
 
         if(nn::cfg::GetRegion() == nn::cfg::CFG_REGION_AMERICA)
         {
+            // COPPA対象の年齢なら復元する
             s_ApprovalId = nn::act::GetSalvagedApprovalId();
             NN_UTIL_RETURN_IF_FAILED_2(
                     SaveApprovalId(),
@@ -176,6 +178,7 @@ nn::Result ActCompleter::SaveApprovalId()
     // Cave-accountのファイル書き込み設定
     const char* const SYSTEM_SAVEDATA_ARCHIVE_NAME = "ssave:";
     const char* const CAVE_FILE_NAME = "ssave:/s.bin";
+    const size_t CAVE_FILE_SIZE = 143360;
     const u32 APPROVAL_ID_OFFSET = 0x11000;
 
     NN_UTIL_RETURN_IF_FAILED(
@@ -186,7 +189,27 @@ nn::Result ActCompleter::SaveApprovalId()
 
     {
         nn::fs::FileOutputStream out(CAVE_FILE_NAME, true);
-        out.SetPosition(APPROVAL_ID_OFFSET);
+
+        // ファイルサイズ分のダミーデータを書く
+        common::HeapManager dummyWriteData(CAVE_FILE_SIZE);
+        void* buf = dummyWriteData.GetAddr();
+        if(buf != NULL)
+        {
+            std::memset(buf, 0, CAVE_FILE_SIZE);
+            s32 writeSize;
+            NN_UTIL_RETURN_IF_FAILED_1(
+                    out.TryWrite(&writeSize, buf, CAVE_FILE_SIZE, true),
+                    nn::fs::Unmount(SYSTEM_SAVEDATA_ARCHIVE_NAME));
+        }
+        else
+        {
+            return nn::Result(nn::Result::LEVEL_FATAL, nn::Result::SUMMARY_OUT_OF_RESOURCE, nn::Result::MODULE_COMMON,
+                    nn::Result::DESCRIPTION_OUT_OF_MEMORY);
+        }
+
+        NN_UTIL_RETURN_IF_FAILED_1(
+                out.TrySeek(APPROVAL_ID_OFFSET, nn::fs::POSITION_BASE_BEGIN),
+                nn::fs::Unmount(SYSTEM_SAVEDATA_ARCHIVE_NAME));
         s32 writeSize;
         NN_UTIL_RETURN_IF_FAILED_1(
                 out.TryWrite(&writeSize, &s_ApprovalId, sizeof(s_ApprovalId), true),