dmtt,
As promised, I raised the issue with the powers that be. I just checked that the desktop version does allow direct entry of that line 8t figure. TurboTax does provide a way to transfer to the desktop:
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-forms/find-forms-mode/L507Cr4T5_US_e...
so that may be your best option for now.
The reason that the desktop version allows direct forms access is because you pay the filing fees in advance to active the desktop version rather than at the time you finally efile.
