MS Office MRU

Sorry If I already posted similar topic a long time ago.

Why doesn't CCleaner delete Microsoft Office MRU entries, for example "save as", "save attachment", and so on???

These entries (for each office application) are located in

"file name MRU" (value) under

HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Common\Open Find

Is not a good idea, also for privacy concern?

Thanks