No you can only transfer from one 2022 return. Did your spouse use Turbo Tax also? Pick the account & return that is the most complicated like has depreciation or a business etc. or just start a new account for the both of you. But then you can't transfer from 2022.
No you won't be able to add or merge their 2022 info. Just add any prior info it needs as you go along. Be sure to enter both your 2023 incomes to the same Joint return.
