How to amend schedule C for my 2023 return with TurboTax Home and Business 2023?

Hello,

 

I missed a large deduction in the schedule C of my original 2023 return.So I need to amend it. I have home and business desktop, so I'm supposed to be able to do it. 

 

However, when I clicked the amend button in other tax situations, I found that the 1040-X form was generated incorrectly. When I clicked the button and without doing anything, I should have zero refund/due, because I have not changed anything yet. However, I saw a refund immediately. Then, I inspected the 1040X form, and found that the amounts in 1040-X, column A (original amount) were quite different from the ones I entered before. But the column C matched what I entered. This seemed wrong to me. How did this happen? 

 

I'm thinking of manually modifying the column A amount to match column C (and the original return). Would that solve the issue? 

 

In addition, I could not find any way to amend the schedule C in the amend page. It seemed that the amend page did not have any business items, everything was personal items. Since I wanted to change the business amount, how to do that? 

 

Thanks.