The ability to manage transaction flow by connecting bank accounts in QuickBooks will save you a lot of time reconciling. The first important step is to determine the correct data range to download.
Option 1 login to you bank account and download the desired range of transaction to obtain.
Option 2 from within QuickBooks login to your account and select update to brind down the latest transactions. If for some reason you bring down a wider range of trasnactions then forst select all that your do not want and prese "Unselect".