Thanks for the info.
My family owned the surface and minerals before 1955. They signed a lease in 1955 and the minerals have been producing since then. I guess I’m looking for an easy way to determine what interests were conveyed or retained by and to whom. My great-grandmother was one of the 22 original lessors. She never conveyed any interest to her children, from what I understand it was all inherited. All three children received regular payments. So does that mean the RI alone was inherited? Does the MI follow simultaneously? What happens if there are no recorded conveyances to family/descendants?