TurboTax Online 2018 displays the value from the most commonly used box from each slip ready to import from your CRA account. You can click on View Form beside each slip to see all of the values on your slips.
After you review the slips and click "Yes, enter this data", your slips will be imported into your return. From there, the summaries in each section will reflect the correct totals from all of the slip data you imported.