Outlook 2010 Can not find a certain file in M/S Outlook 2010.


Outlook version
Outlook 2010 64 bit
Email Account
When I pay a utility bill, I save the receipt in a file in Outlook 2010. Now I can not find the file but when I type the name of utility company in the search area in Win 10, All of the past receipts show up. But not find where they are located. Is there a way to locate which file they are in, sometimes by mistake a file is moved by accident. Or what file the (now sub file) they might have been moved too.