1099's - Original and amended 1099

I received my 1099's from Brokerage firm. If Turbotax is able to download the information and automatically input it etc, and THEN I subsequently receive an amended 1099 later from same brokerage, can I download that one and will it simply overwrite and use the new data? Will it only download the changes or revisions etc so that the overall data remains accurate? Thanks for any help or answer.