In 2023 we lived part of the year in another state. We became residents of Florida in Oct. of 2020. Why is it saying the date cannot be before 1/1/2023 in My Info?

[DianeW777]

The tax return looks at only the current year.  You can use 01/01/2023 as the date you were a resident in Florida (FL) and then the move out date.  The state is only concerned about the current tax year residency to determine your taxable income in your new state.

[SteamTrain]

But if you have a vacation, or summer home in another state that you occasionally spend some time at, then you do not indicate that you moved to another state during the year.  A move to another state, is only indicated when you move your primary residence (and the majority of your stuff, and car registrations, and voter registration) to a different state.