In the Project body different scenarios are developed, one being:
"If she and her 2nd husband move to a new country with children from both families she becomes a PRIMARY MATRIARCH in the new country."
where
"she" is a Secondary Matriarch (SM) in her previous country.
I think that the statement is also true regardless whether she was a matriarch in her previous country at all.
If Sally is a 3rd generation woman married to a husband, bore children from him and he died afterwards, she marries again and have children and her 2nd husband move to a new country with children from both families she becomes a PRIMARY MATRIARCH in the new country.