When you import from CRA's Auto-Fill My Return, TurboTax downloads that info and shows you what was found. You then have to click the button to import the data into your return. Is it possible that you didn't click the button to complete the import?
Here's how to try the import again: https://turbotax.community.intuit.ca/replies/2994684
And here's how to enter your T4 slip manually: https://turbotax.community.intuit.ca/replies/2648055