Further to the above, I have sufficient room to use the full deduction so that is not the issue.

In order to assist you properly, can you tell us which version of TurboTax you are using; Online or Desktop?

We made some tests in TurboTax Desktop and it should work properly. As you can see on the following screenshot, when the information for both dependents is entered in Dependent section, we can see it on the Tuition transfer worksheet and then on line 32400 of the T1.

Same for TurboTax Online, it should work. You have to make sure in Additional Dependent information, you clicked yes to the question about student // you have to make sure you applied credit for each dependent.

We suggest you to review your entries.

Thank you for choosing TurboTax.

Hi I am using the online version.  Both dependents have the box checked for tuition transfer and both have their amounts entered from Schedule 11 of their individual returns.  Yet somehow only the tuition transfer amount from one of their returns is showing up.  Is it possible to take this offline and demonstrate what i'm seeing?

Given this doesn't work and the non-reply to my question I'm moving my returns to a competing software.