I have a Single Member LLC that transitioned to an S-Corp in 2019 with the same name and EIN. What do I need to do to file 2019 taxes?

This is not a new business, the name and EIN are the same for the LLC and S-Corp. I assume that all the assets, deductions from the LLC would apply to the S-Corp as this is the same business, just re-classified as an S-Corp as of Jan 1, 2019.

Can I just file form 1120S and to get my K-1 and file my personal return?

Is there anything related to the Single Member LLC that would be missing? 

Thanks!