Trouble downloading more than one 1099

Using TurboTax Deluxe 2023 on MacBook Air.  I downloaded a 1099 from Schwab and told TurboTax it was my only 1099. Now I need to download a 1099 from TD Ameritrade (they merged w Schwab and it turns out that's where all my info is).  Now... TurboTax won't let me.  How do I fix that?