Hi,

You can refile a T2 from TurboTax business inc. Search for the form T2 ADJ. Then:

1) Make the required change ( add info on schedule 4 for example)
2) Complete the T2 Adj: mark return as amended and give a brief explanation as to changes in the return.

Then file as usual. 
Hope this helps. If you need further assistance use the live chat feature in TurboTax business. A Turbotax Expert can help you 

Hi

Thank you for the reply. I started TurboTax Business Incorporated and it says "License to use TurboTax Business Inc is missing or invalid".  I cannot open the tax file after I press ok at that license screen.  What do I do?

Thank you

Hi,

Please use the live chat feature in TurboTax business Inc for an Expert to assist you
I apologize for the inconvenience