My wife got a T4A for presentations she delivers to teachers. She received a T4A from the organization she works with, and it has data in both Box 28 and Box 48. When I try to enter this into TurboTax, I get an error:

1. You cannot have box 28 and box 48 filled out on the same T4A. Please create a new T4A.

We asked the issuer, who say that they've issued hundreds of T4As and this has never been an issue before.

What should I do? Simply create 2 T4As and include the Box 28 data in one of them, and the Box 48 data in the other?