This is a tough one. If it is for the same income then your employer needs to void the 1099-Misc. If it is for different income then both have to be reported.
If your employer made a mistake, then you have two options on filing the return: (1) File an extension and wait for the employer to correct the mistake, or (2) File the return reporting all information provided (both the W-2 and the1099) and then file an amended return when the mistake has been fixed.
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