If Form T2091 is included with the 2018 tax return, why is Box 9906 in the NETFILE Worksheet which asks if an election is being made on the return answered NO?

A recent response from TurboTax Susan confirms that a completed Form T2091 is net-filed along with the rest of the 2018 T1 personal tax return.  Why is Box 9906 in the NETFILE worksheet answered NO automatically by TurboTax, even if the return includes a Form T2091?  Should this be overridden to say "YES"?  Thank you.