It turns out that the amount for dependent children transferring to Schedule SK(S2) isn't the problem; the problem is that the software miscalculated Line #8, thus resulting in a negative amount in Line 5912, thus causing the amount for dependent children to carry down to Line 10 and transferring to the higher income earner's SK428.
When I manually added up all the the amounts stated in Line 8 on the Schedule SK(S2), I came up with the same amount as CRA, which is why the NOA came back different from the return I filed. How do I notify TurboTax that there is an error in calculations on Line 8 of this schedule? I've had to override it to correct it to the proper amount. See attached.
