The same W2 from the same employer has different box 16, 19, and 20

I got the same w2 from the same employer. The box 18 have different numbers in local wages, tips, etc. One box 19 is empty, the other has a number. They have the same box 20 in locality name. During turbotax review, Turbotax asked for removing one duplicate box 20. I directly imported W2 to Turbotax, so I am hesitate to delete one of them. What should I do?