NG15 - Outlook Email Recovery Question

This morning while scanning thru my Outlook 2010, I discovered that a personal "Investments" email folder is mysteriously missing along with its 1500 or so investment-related emails. This Investment folder was fully present yesterday in Outlook.  My most recent NG15 image backup was about 36 hrs ago, and I'm confident it includes 99% of the missing investment emails along with about 8000 other various emails.  If I run the Recovery Point Browser and tell it to recover the outlook.pst file, will NG restore every one of the 9500+ emails and folders to my Outlook 2010, thus creating a big mess of duplicate emails and folders OR will it only restore the missing Investment folder and its emails??  My concern is that the cure might be worse than the illness. Thanks.