Info in 2017 State data file that I imported into 2018 was wrong. (2017 Fed is OK). How do I fix incorrect state data for 2018? Possible to re-import corrected 2017 file?

2018 Federal return completed, so I didn't want to redo that. Is it possible to re-import corrected 2017 state file only, or over-ride incorrect info on 2018 state?