If I understand correctly. You have two 1099-DIV forms. One carried over from last year and you posted it. You have a second 1099-DIV form, and you want to enter it.
If you've already entered a 1099-DIV and need to enter a second 1099-DIV, select Add another 1099-DIV and follow the same steps above.
As an alternative, you can enter your 1099-DIV manually.
Go to Wages & Income
Work on other income
Investments and Savings
Dividends on 1099-DIV
Add Investments Or select 1099-Div
Relax. We got it = Continue
Let's import your tax info = Enter a different way
OK, let's start with one investment type = Dividends = Continue
Type it myself
Enter your new information.
Don't combine the amounts from two or more 1099-DIV forms if they're from the same payer. Instead, enter additional 1099-DIVs individually by answering Yes to Do you have any more dividend income from somewhere else? after you've entered all the information from your first 1099-DIV.
Where do I enter my 1099-DIV in TurboTax Online? (intuit.com)