Thank you for doing that for me, @MarilynG1 ! Unfortunately, it's the next page starting in Part 3 that is the problem. It has no trouble allocation 0 to MI for non-depreciating assets, like Land. It's the Long Term depreciating assets where it defaults to 100. And suspended losses aren't claimed on that form anyway, though I do think I understand why you placed it in the example. I'm definitely using the interview, as I've restarted this return no fewer than 5 times in different successions to try to isolate the issue even before coming to a full understanding of the MI tax code.
Also, regarding the interview, there's a portion that goes through each asset and asks for the amount attributable to Michigan, and gives you the option to change it "even if 0." That's the steps I follow each time I start. When I check the form after the interview is complete, the line 19 always defaults to a black 100.
