I just experienced the same issue. And I think I found the way to make it work. I've got more than a dozen of these things, so I don't want to have to re-enter them all from scratch.
What I found is this: If a company (investment company, bank, etc.) gives you both a 1099-INT and a 1099-DIV, and you entered each separately last year, as was the custom, it will bring them both in. When you go down the list, it will show all of the imported 1099's, both INT and DIV. You select one, for example "Vanguard Account 1099-DIV" and click review. When it asks you to import, click on the skip import. This will take you to the screen with the buttons for the various forms of income as if you are setting up a new one. You HAVE to select the type of income input last year on that particular 1099. So for this example, since it was a 1099-DIV, you have to select the Dividend Income button and then continue. Don't select any others. When you then find the "Vanguard Account 1099-INT" imported from last year, do the same thing but you have to select "Interest Income" and only Interest Income. When I do this, it gives me the boxes to input the amounts from the 1099.
But if I mistakenly select Interest Income on an imported 1099-DIV, then I'm basically adding a new 1099 from scratch. Hopefully this method works for you. (And hopefully it continues to work for me.) I figure that once I've updated all the imported 1099's, I can use the Forms view to make edits, corrections, and the usually (and unfortunate) overrides.
Hope this helps. Let me know if you experience is different.
