Remote workers only pay tax to their home state. They do not pay tax to the state where their employer is located (exceptions apply for companies located in New York, Pennsylvania, Nebraska, Delaware and Arkansas). It's not clear that Form WH-47 is even required, in your situation. Check with your employer.
In addition, Indiana and Michigan have a reciprocal agreement. Even if you physically work in IN, you would still not file an IN return or pay any IN tax.
