2020 S Corp return was filed with a name change. Return efiled/accepted Sep2021.  When I submitted the extension for 2021 return it was rejected with the new name.  Resubmitted with old name - extension was accepted.        Now I'm wondering if that was such a smart move submitting under the old name but mailing in seems like throwing it into a dead letter pile

So.... shouldn't IRS have changed the database by now ?    If it's not changed by the time I'm ready to file return I'll need to mark the Name Change box on the return again - what problems might that cause?