I am claiming the 'other state tax credit' since I live in CA but work remotely in MI. Last year I had to manually send the FTB my MI tax return, how can I do it here?

In the Schedule S, it says:

"You must attach Schedule S, Other State Tax Credit, and a copy of your tax return(s) filed with the other state(s) to your California tax return. If you e-file, do not submit tax returns filed with other states to California. Retain a copy of other state tax returns, along with a copy of this form for your records."

Last year I e-filed thru TurboTax and the Franchise Tax Board (FTB) still asked for my MI state return. Am I misinterpreting this statement?