New user question

I just D/L & ran CCleaner - was amazed that it deleted 667 MB of files. Was also surprised to find that my recently used file list from Word, Excel, and other applications were gone including the ones I had pinned to recent document list.

Is there a way to configure CCleaner such that it would not clean those recently used files that I want to remain? In other words, the ones that are pinned to the list?

Uncheck the recent documents on the second tab of ccleaner's cleaning section (applications) under the office heading