I too had a recent 2023 return changed with new calculations stating I might want to do an amended return.  However I did NOT make the changes, and in going through the documentation provided and seeing what I entered was correct, I called Intuit.  I was told that if I don't lock my client files once they have been efiled, that IRS can go into my client files and CHANGE THEM randomly.

I don't recall a DISCLOSURE from Intuit for this type of Invasion of Privacy of my client's returns.

This makes me want to quit this business if I have to NOW lock out the taxing authority that is holding US accountable for keeping the files 'SAFE' but IRS can enter our files and make changes according to WHO?  This is unacceptable and excuse me if I am pissed about it.  So are my clients.  I am locking each one, and in years passed as a single tax preparer, I used to file 650 returns.  Now, in my 70's I did 150.  Next year, I will cut those down again until I have taught people to retain their own receipts, mark on those receipts, bag those receipts, keep extreme records and put them all together in a place labled IRS AUDIT to expect that will occur.  

Thanks to our Government, we all have to teach our clients how to be proactive in this government and not reactive.  Can I get an amen?