I have moved to Sioux Falls after my Sole-Proprietor business in Iowa failed due to health issues.
If you have lived in SD for 6 months or more. You can file in SD.
As long as you have been in Sioux Falls for 6 months (180 days), you can file in your current state, otherwise, you have to file where the business was. As a sole proprietor your business goes where you are
