When you have a CPP or EI Overpayment, you will only see the "Maximum" amounts on the Schedule 1, (as CRA does not allow you to enter any excess). Any overpayments appear on lines 448 - CPP Overpayment (Excess Contributions) and 450 - EI Overpayment (Excess Contributions) as a credit.
These overpayments are very common, you can rest assured that TurboTax is making the entries on the correct lines of the CRA forms.
