So while waiting for a response to this Q, I created short year return (changing the client number) placing 1/1/23 as the short year start and 4/21/23 as short year end and made sure e-file boxes and such were checked and such.  When I calculated it, there were no critical errors.   I then created the e-file, still no errors, validation successful.  I then went to file it and that is where it gave me errors about failing presubmission but when I went back to diagnostics there no critical errors or reasons why this return could not be filed.  Even the 8879 shows the short year as 1/1/2023 ending 4/21/2023.  What a drag!