Why is irs limiting my charitable contributions when turbotax did not?

[SweetieJean]

Perhaps the IRS changed something else on your return (such as your income), which in turn limited the charitable contribution.  Wait for a letter from the IRS; they do not notify TT.

[smith22101]

We got the letter from the IRS.  They did not change our Adjusted Gross Income.  They changed the charitable deduction down to 60%.  IRS Publication 52 - in discussing the 100% limit for 2020 for cash contribution - states as a requirement that "The taxpayer elected to have this limitation apply to such contribution."  TurboTax Deluxe did not have a question about selecting the limit.  How do I know if our file was transmitted with the selection made?  Turbo Tax online doesn't even recognize that we've already filed our return and the IRS accepted it!

[smith22101]

Okay ... we use the downloaded Turbo Tax so maybe my online account doesn't know that we filed.  But I can't have a conversation with a specialist when my online account doesn't know I've purchased Turbo Tax and filed.  Catch-22.