2022 W2-C no numbers in Box 1 and 2

[momotax]

I've received my 2022 W-2C after filing my return. It appears that only the numbers in boxes 3, 4, 5, and 6 have been corrected. Do I need to file an amendment? Will this affect my tax refund or payment? The reason for these corrections is because I left the company earlier than anticipated, as outlined in my sign-on letter, and subsequently returned half of my sign-on bonus. 

Also, what is the process on Windows version? Should I edit the existing W2 or file a new one? If I need to start with a new one, there is no number on the box  1 & 2, should I use last year's information?

[SteamTrain]

@momotax   Normally, you just edit the original W-2 to change the boxes they have numbers in them on the W-2C.

Thus you'd leave boxes 1 & 2 ( and other boxes) alone when you edit the original W-2....and just change 3,4,5,6.

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Most people do not need to bother amending for changes to boxes 3,4,5,6 because that has no effect on the taxes due to the IRS (nor refund).

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Occasionally, where a person had two employers for that year (2022 in your case) if the total sum of the box 4 $$ amounts from both employer's W-2 forms, changes across the $9114 threshold (for 2022 only) after the W-2 correction is made...in that limited case, an amended Federal tax return would be appropriate, because it does affect the SS overcontribution credit that is involved in that situation.