Tying to migrate zha from skyconnect to sonoff stick

I think i made quite the mess while migrating my zha Network from skyconnect to the Sonoff ZBDongle-E. Why did i want this? Because I want to use the Skyconnect for Thread. The migration itself went smooth. But I can’t seem to reconfigure the Skyconnect for Thread. HA always tells me that it couldn’t read the Skyconnect Firmware, which might be caused by an Integration using it. Even after going all out (removing ZHA and both sticks) it tells me the same.
Does anybody know how I can resolve this?