An amended return only shows what you forgot or are changing. The IRS already has your original return with the original credits you took, you do not report them again.
The amended return should show if ADDITIONAL tax needs to be paid or ADDITIONAL refund should be expected. The amended return reports the difference. If you were getting a $1,000 refund on your original return, and the amended shows you should have gotten a $1,250 refund, the amended return will show a $250 refund,,,,the difference.
Be sure to print and mail the amended 1040X, it cannot be e-filed.
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HERE for IRS 1040X instructions
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HERE for where to mail your 1040X
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