ON479 incorrect calcuation

I have un-linked spousal returns for my parents, as TurboTax doesn’t allow the returns to be linked in my parent’s situation.

 

Having said that, Spousal income is filled in on Easy step and it populates correctly on the INFOS sheet.

 

It does transfer correctly to the Federal forms,  However, it does NOT populate on line 6 of ON479, resulting in an incorrect calculation for the Ontario refundable credits.  There’s no way to over-ride line 6, so I’m stuck.  Anyone who has Medical expenses, with an un-linked spousal return will have this calculation error and could cause an incorrect refund on the lower income spouses return.

 

Any clues on how to work around that or better yet, fix it?