I'm trying to efile an amended 2020 Michigan state-only return, when I click on Efile Now button the efile window shows Michigan Amended Return status "Not Ready" with reason Michigan Return is not completed.  I don't have any errors to fix and have checked the efile box on fed info worksheet for Michigan.  In the same window the Michigan State-Only option shows "Ready".  Do I efile the Michigan State-Only return instead of Michigan Amended Return?  I have files attached that need to be sent with the amended return.