If you literally moved to the foreign country - meaning you abandoned your domicile (your main, permanent home) in CA and established a new domicile in the foreign country, then for tax purposes you are are part-year resident of CA. You became a resident of the foreign country, and ceased being a resident of CA, on the day you began living in your new domicile in the other country. You have to enter that date into TurboTax; TurboTax has no other way of knowing that information.
On the other hand, if you kept your CA domicile, and you are living in the foreign country on a temporary or transient basis, for tax purposes you would remain a full-year resident of CA for 2019.
You'll find all of CA's rules on residency in this reference:
https://www.ftb.ca.gov/forms/2019/2019-1031-publication.pdf
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
