Cost Basis on Dividend Reinvestment Account is Wrong

I recently changed the Account Title on a long-held dividend reinvestment account.  When name was changed Computershare closed the 'old account' and opened a 'new account'.  I sold shares in 2022 and the cost basis shown on trade advice is only the cost basis of the dividends reinvested since the 'new account' was assigned.

 

I can adjust the cost basis to my actual records, but it will not agree with the Sales Advice reported to IRS and will flag me for audit / error.   Is there (1) a way to adjust basis in TurboTax (2) a form within TurboTax to provide a written statement to the IRS explaining difference (3)  any advice you can provide  to efficiently handle this matter.

 

PS Sold another Computershare long-held dividend reinvestment and they simply put N/A for basis.  In that case I just put my calculated basis.

 

Thanks