After Running CCleaner Recently opened Docs still show up in Microsoft Word?

I just noticed that after I have run CCleaner my "recent docs" folder is cleaned but when I open MS Word/File all of the recent docs I used in word come up. Should these be cleaned or is there a way to set it up so they are? I recently updated to v2.25.1025. I have not noticed this before but could not swear it was not the case. Any input would be appreciated. Thanks!

What version of Word, what OS???

Word has a cash on your system where it stores this list of docs.

You can delete these safely or you can set the options in Word to stop it storing all the doc files that appear in that list.