That can't be right. You only have one set of files so it can't/shouldn't be opening a different file.
The "quick access" menu list are just shortcuts to the folders that hold your files in your user profile. You can test that by rightclicking on 'Documents' (or any other folder listed) in the quick access menu, choose 'Properties' and look at the location tab. Mine says C:\Users\lotvic\Documents. (Other file items in Quick Access that are on ext hard drives are listed with the drive letter path to where they are)