State tax filing

So I have to go to the Toledo city tax site to get that return...then print my MI return from turbo tax and attach it.  One issue still is how to enter in the Toledo city tax paid on my MI return.  I know it needs to go in box 18A.  If I just print it and handwrite it in, doesn't that then change the totals in the other boxes that follow, making my printed Turbo Tax MI state return not usable?  Thanks!