Convert a child organization to root organization

Dear Experts,

I have a situation where, I need to move the child organization a level up and make it a root organization.

I could have created a new root organization and deleted the old. However, I have assigned mitigation control and the child organization cannot be deleted and hence want to move it as a root organization.

So is it possible to convert a child organization to root organization?

Thanks in advance.

Regards,

Sahil.