IE 10 Cache Size

Hello,

i am trying to change the IE 10 cache using GPO by change CacheLimit registry-setting.

Even when exporting the registry file, and importing this file on another machine will not work with "Cachelimit"

This is my registry-key :

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content]
"CachePrefix"=""
"CacheLimit"=dword:0000a000

 = 40 MB Cache

When importing this in windows 8 and IE 10, the registry looks like this :

= 40 MB

But when checking IE 10 :

 (changed manully before registry-key from 250 to 60)

What is going wrong?

Thx